Formula. In that case you need to: Add a numeric field (short, long, float, double) to your table. Is there any formula to calculate Start time to End time with excluding lunch time? Here is example : Lunch time :12:00pm to 1:00pm. Formula To Calculate Time Difference Crossing Midnight - Excel. In Excel I have been trying to find an easier way to calculate a time difference where the times cross midnight. how do i write the formula and account for midnight crossover. This formula will help you calculate the hours difference between two times, even when the end time crosses midnight (Ex 7pm - 2am). The table above is one a I created on Power Bi desktop. This tip applies to Excel 2007, 2010, 2013, 2016, 2019, and Excel in Microsoft 365. Blue line comes out through the data in column E from E30 onward. Please Login or Register to view this content. Example. In addition, Daylight Saving Time / Summer Time and automatic time zone. "Taking the formula in cell G4: The first part of the formula takes the finish time less the start time and then checks whether the finish time is less than the start time (E4<B4). Time. Excel assigns the number 1 to the 24 hours of a day. Rows 26-34 and 49-60 do not produce wanted formatting. This will convert the times to datetime for day 0 (1. The MOD functions does not work if you use 24 hr / military clock, as it returns 17:30 instead of 06:30 between finish and start. A short video showing how to calculate time intervals or duration across midnight. Is there any formula to calculate Start time to End time with excluding lunch time? Here is example : Lunch time :12:00pm to 1:00pm. Find the exact time difference with the Time Zone Converter – Time Difference Calculator which converts the time difference between places and time zones all over the world. When you are using. Basically, we had to apply one of two formulas to compute variable right_hours_slept: (wake_time-bed_time)/3600 if bed_time is "at or after midnight. 125-0. 2. TimeOfDay, endTime. So, if start times are in A and end times are in B (starting row 2), try this: = ( (B2-A2)+ (A2>B2))*24. "Day" hours can be calculated by 2300 minus time-in (if <2300), then "Night" hours are total hours minus "Day" hours. Here is the way the previous poster described it: "Excel template: Loan Amortization for random/irregular payments, figures days. In Excel I have been trying to find an easier way to calculate a time difference where the times cross midnight. To use the TIME function, simply enter the hour, minute, and second values as arguments in the function. The best way is to have both values as DateTime, then you can get the real value, as a workaround you can assume that if the end time is lower than the start time, means that it refers to next day, but it will be limited to 23 hours (24 if you use <=) DECLARE @start TIME = '21:00' DECLARE @end TIME = '01:00' SELECT DATEDIFF (HOUR. You provide the start time, the end time, and the desired interval, and the INTCK function returns the difference in seconds, minutes, or hours. If your time runs across midnight in Exc. minutes) The logic here is to turn the times into a number of minutes from midnight, and then simply subtract one from the other. In Excel I have been trying to find an easier way to calculate a time difference where the times cross midnight. I cannot figure out the correct formula to complete this. The formula in previous post is only available for Excel 365/2021 users This formula is available for all Excel-users. They will become Cell > Data Format > Automatic with Date and Time (Date None). Spreadsheet Purpose: WORK HOURS per MTH with breaks & night time rate exta including Year Summary of Hours, Pay & Miles. 2. I'd like the time difference to be in minutes (but that can be done in a separate column formula). Formula To Calculate Time Difference Crossing Midnight - Excel. Calculate Total Hours Automatically Deducting Lunch Breaks - Excel. In Michael's work there is a subtle but often important difference between the time 24:00 and the time 00:00, but Excel doesn't support a time of 24:00. Over 7 minutes to 15 minutes = 1/4 hour 15. Converts a date in the form of text to a serial number. Calculate Time Difference exclude non-operating hours and holidays. Question/Issue: Need Formula to calculate number of night hours worked in a shift, using 4 values (Detailed below). [*] Enter an array formula by pressing ctrl+shift+Enter instead. In the case of Monday (E4<B4) evaluates to TRUE, and since TRUE = 1 it adds 1 to E4-B4 to correctly calculate the time. IF after midnight, 24 hours are added to the finish time to allow the calculation of Finish time minus Start Time to still work. As in the example below. For example, if you leave Los Angeles at 09:00 (9:00 am) and arrive in New York at 18:00 (6:00 pm), then the apparent traveling time is 9 hours. A. Is there a way to create a formula that if it passes 2400 hrs that it can make the necessary calculation. All you need to do is to use the following formula. Get the time at any given coordinate on Earth, calculate time zone conversions. Archived post. Special cases of the Sun-synchronous orbit are the noon/midnight orbit,. For "fixed" stars it will be close, but for the Sun, the rate of change of azimuth varies with time (due to the eccentricity of the Earth's orbit, mostly; and to the fact that angle between the ecliptic and the horizontal system is changing), so the time it takes to traverse azimuths less than 180° will (almost) never be precisely the time it. And now, let's see how our time difference formula and time codes work in real worksheets. That means we didn’t show you the output if your end time is on a different date. Duration Process :6 hours. 11:00pm *is later than* 5:00am. select * ,datediff (second, cast ( [schedule_deptime]as time), cast ( [prev_announce_time]as time)) as kpi1_delta. Find below the sample data and details for your reference. 🔗 Steps: Type the following formula on cell D5. Start. Its direction, height, illumination, and lunar phases calendar. ) $endgroup$If I wanted to subtract two military times to get minutes what formula would I use. Type the other start and end times for your friends Joy and. Remember that in Numbers, every Date has a Time attached, and every Time has a Date attached (even if they. Add the total hours to the total minutes (in hours and minutes): 6h + 1h 30m = 7 hours and 30 minutes, or 7:30 spent gardening. Example: Start time: 23:50:00 End time: 00:15:00 How would you formulate an equation to determine the duration of time or differnce between the start and end time? We’ll carry on with the tutorial on how to calculate hours worked after a night shift. Formula To Calculate Time Difference Crossing Midnight - Excel. Duration Process :6 hours. Start Time (8:00am). You want the time difference in minutes. It is used worldwide to avoid confusion arising from local time differences. The calculator below gives a time difference in years, months, days, hours, minutes, and seconds between two time points of two different Earth locations. For example,. Looking for some help with a formula for subtracting time over midnight: I have a full sheet set up roughly as below, I need to have a left formula to bring out the time and an if statement that reads if it says Fresh or Ambient then subtract 1 hour (C1) or if it reads Mixed, subtract 2 hours (C2). 24 hours is 1, 0. The difference of time between 11:00pm and 5:00am is -18 hours. hours after midnight dont need a calculation as every day starts counting from 0 so 2 o'clock is also 2 hours after midnight only posible AM/PM notations needs to be omitted to show 1PM as 13:00 after midnight see attachment for result. we will say the number in cell A1 is 193. Start. 1. This cell will show the number of days between your specified dates. 16 minutes to 30 minutes = 1/2 hour 30. e. In Excel I have been trying to find an easier way to calculate a time difference where the times cross midnight. Formula To Calculate Time Difference Crossing Midnight - Excel. __. Start. Heres the formula which you. then subtract the earlier time. There’s a specific formula to total hours worked past midnight in Exce. Share. hours * 60 + arrivalTime. Enter this formula: =(B2-A2+(B2<A2))*24 (A2 is the earlier time, B2 is the later time, you can change them as you need) into a blank cell which beside your time data, see. Example: Start time: 23:50:00 End time: 00:15:00 How would you formulate an equation to determine the duration of time or. Your formula got cut off, that sometimes happens when you use < signs, I assume you have a formula something like this. = (B1-A1)*1440. In Excel I have been trying to find an easier way to calculate a time difference where the times cross midnight. In cell C2, type the end time, including “a” or “p” as appropriate, and press Enter. In order to calculate how much you have earned, we multiply the time (in decimals) by the hourly rate: 7. We have a client who will pay using the 1/4, 1/2/ and 3/4 of an hour increments as follows: From the hour mark to 6 minutes = 0 time paid. annual large payment. After the ‘if’ word, we’ll start typing out the condition itself – the ‘Start Work’ time (the value in cell C7) is greater than the ‘End Work’ time (the value in cell D7), which is true for the working time that spans midnight. Then it returns a negative value. 1:00 am. I have a start time and and an end time and would like to calculate the duration expended between the two. If you have cells with time in Excel, and you subtract one cell from another, you may end up with the pound symbols. Now for d1. Duration Process :6 hours. By using the ##":"##":"## code it doesn't give me the right answer. =(end_time-start_time)*86400. I have timestamps in column A from A5 onward. Example: Start time: 23:50:00 End time: 00:15:00 How would you formulate an equation to determine the duration of time or differnce between the start and end time?There are several ways to calculate the difference between two times. In Excel I have been trying to find an easier way to calculate a time difference where the times cross midnight. Cells (rfnd, cfnd - 2) This issue is when the end time is midnight (ie 0:00AM) The line in blue catches whether the end time is midnight. Full 24 examples for 2 time. The formula is, =D5-C5. " In this case both times belong to the same date and wake_time>bed_time. In Excel I have been trying to find an easier way to calculate a time difference where the times cross midnight. Currently is manual edit of total hours in Month. Calculate hours between two times after midnight with formula. time-dep. I have 2 times that may cross midnight. Step 1: First, select cell E5 to subtract military time. Over 7 minutes to 15 minutes = 1/4 hour 15. - Free Excel Help. - Free Excel Help. You can do it this way: select *, convert (time, convert (datetime, timeto) - convert (datetime, timefrom)) from table1. If Time Out (cell D2) is in the day following Time In (cell C2 ), to get the total shift time you would need to enter a formula to calculate (1 - Time In) + Time Out which is Time In until midnight plus the rest of the shift past midnight. [SOLVED] formula to calculate time difference crossing midnight. The general formula for time difference is . Now, Orange line is starting from time. For example, to create a time value of 3:30 PM, you can use the formula =TIME (15, 30, 0). Standard times are shown as positive or negative deviations of UTC, that's why time differences are calculated by determining UTC and calculating each time zone from there. By supplying different units, you can get the DATEDIF function to return the date difference in days, months or years. Over 7 minutes to 15 minutes = 1/4 hour 15. Example: Start time: 23:50:00 End time: 00:15:00 How would you formulate an equation to determine the duration of time or differnce between the start and end time? Local Nav Open Menu Local Nav Close Menu. It is important that the solution is Excel-based (no VBA or add-ins) and that the date changes respectively. Received Date & Time: 10/29/2010 3:27:00 PMRe: "Head Count" of time periods crossing midnight Shout if you want to use formula/Named Range approach to adjust the column ranges automatically. Is there any formula to calculate Start time to End time with excluding lunch time? Here is example : Lunch time :12:00pm to 1:00pm. g. Creates a Time from local, universal, and custom Time formats. Subtracting 30 Minutes From Time In And Out For Schedule - Excel. Select the data range for the table. A. Over 7 minutes to 15 minutes = 1/4 hour 15. One way which results in hours and decimal of an hour is. Regular Rate of Pay. There are two approaches that you can take to present the results in the standard time format (hours : minutes : seconds). In this video, you will see the easiest way to find the time difference between two dates and times that go past midnight. Refinement is to use 'Date and Time' Format for start and finish, and 'Duration' format for the difference. The calculator had two major field for start date time and end date time. Format cell C1 as a duration. In Excel I have been trying to find an easier way to calculate a time difference where the times. In the screenshot below, column C shows the difference between the time in consecutive rows (column. Day, 0, 0, 0). Re: Calculating hh:mm between two times that span midnight. . In SAS, you use the INTCK function to calculate the difference between two timestamps. In the third cell I enter this formula, =INT ( (C163-B163)*24). They work on shifts and the operation is 24 hours. I have two times I want to calculate the difference from: A1 is the time a person went to sleep (ex. Try this: in an empty cell, type “=NOW ()” and hit <ENTER>. Example: Start time: 23:50:00 End time: 00:15:00 How would you formulate an equation to determine the duration of time or differnce between the start and end time?The minute value does change. Time1 = CDate ("6:03:59 AM") Time2 =. In cell B2 type the start time, enter a space, and then type “a” for AM or “p” for PM, and press Enter. DAYS360. Duration Process :6 hours. A simple formula is used and then a. Duration Process :6 hours. If any are at or after midnight, the calculations are wrong. Calculate hours between two times after midnight with formula. Example: Start time: 23:50:00 End time: 00:15:00 How would you formulate an equation to determine the duration of time or differnce between the start and end time?There are several ways to calculate the difference between two times. Description (Result) 4 =INT((B2-A2)*24) Total hours between two times (4) 5 =(B2-A2)*1440. Example: Start time: 23:50:00 End time: 00:15:00 How would you formulate an equation to determine the duration of time or differnce between the start and end time? In Excel I have been trying to find an easier way to calculate a time difference where the times cross midnight. Get Difference in Seconds. Subtracting Time - From Before Midnight To Next Day; Text To Time Then Give Total After Midnight; Timesheet: Calculate Time Within A Period When. . Formula To Calculate Time Difference Crossing Midnight - Excel. , numbers of seconds after midnight of. These shifts can cover anything over a 24 hour period. Richard Buttrey. The above formula will give you the total number of hours elapsed between the two-time values. They work on shifts and the operation is 24 hours. We have a client who will pay using the 1/4, 1/2/ and 3/4 of an hour increments as follows: From the hour mark to 6 minutes = 0 time paid. Format cells A1 and B1 with the time format. How do I calculate this time. If its a 24 hour clock, using my calculations we'll get the number of minutes from the beginning of the day (12:00am). In the example. Here you can see the same difference, one formatted as automatic, which defaults to time, the other is formatted as a duration: The formula =B2-A2+(B2<A2) returns the difference between the two times, and adds 1 day if minuend is less than the subtrahend, it adds 0 days otherwise. Received Date & Time: 10/29/2010 3:27:00 PMIn the sumproduct formula the times are just examples (I will fill those with times in numerical format). AddDays (1); double remaining =. Show Printable Version;. e. each is less than 1, and that the duration is less than 24 hours. I have tried the function Duration. For example, I need to subtract 20:22 (A1) from 20:54 (B1) and get 32 (for minutes) (C1) Also, would the formula be different crossing midnight. I want to calculate the Max, Min, and Ave times. anon73440385 May 13, 2021, 11:36am #3. DAY function. Formula To Calculate Time Difference Crossing Midnight - Excel. Time. If this is the case, then you have two amounts to. For example: Free calculator to get the number of hours, minutes, and seconds. A simple formula is used and then a custom formatting rule is created to. An alternative to what @FlexYourData posted is: =SUBSTITUTE(A3," Z","") Use it on an helper column, then subtract the cells. Formula: Please Login or Register to view. The main function. Use the formula =B2-A2+ (B2<A2) to calculate a duration effectively. Enabled = true; Don't forget to disable the timer when handling the tick. Likely the most well-known include Eastern, Central, Mountain, and Pacific Time Zones. You could say ΔF = 180. e. So if Start is greater that Stop it adds 1 to Stop. "Midnight" is 00:00:00 and is only recognized as belonging to the following day. Time zones consist of a group of 24 spaces between lines of longitude that determine the local time between the lines. If I wanted to subtract two military times to get minutes what formula would I use. Next, right-click the cell, choose “Format Cells,” and pick “General. 1. 1am = 1hr and 11pm = 23hr, (1 + 23) / 2 = 12. But now I've got to calculate the part of the time someone worked between midnight and 06:00AM if that person indeed worked in those hours. Formula To Calculate Time Difference Crossing Midnight - Excel. The above-mentioned formula is not useful if the first time value is before midnight and the ending time value is after midnight. The time on the top is local time and on the bottom is Z time which simply follows along with the local time by adding/subtracting the set time zone. You can use the equivalent formula d = rt which means distance equals rate times time. Hence, write down the below formula in the Formula Bar. Formula To Calculate Time Difference Crossing Midnight - Excel. =B2-A2+ (A2>B2) That will work to calculate time between A2 and B2 even if it passes midnight. month, day, quarter, year etc. Right-click the new field heading in the table and select the Field Calculator. If this is the case, then you have two amounts to calculate. Time interval formula. You made a comment to this effect on another post) For example, to check if it's between 5 AM and 9:30 PM. When times cross midnight, the problem becomes more tricky, since the end time will often be less than the start time. We use MEDIAN to identify the actual interval in both cases. To get the correct calculated result between two times over midnight, you can apply the following formula: 1. Duration Process :6 hours. And now, let's see how our time difference formula and time codes work in real worksheets. Yuta Smith's schedule is June 8,2020 11:00 PM- June 9,2020 8:0AM. 83 or something like that. Selection of the preferred time format. 3. . Let me show you the process. I am a little confused with what you are after when you are stipulating. Formula To Calculate Time Difference Crossing Midnight - Excel. This is a free online tool by EverydayCalculation. Calculating Time Difference Between Two Days Combined With IF Formula? Calculating Date & Time Difference: Result In Hours Only; Mean By Day Of The Week If After A Certain Time And Before Midnight. Hello everyone, I need some help. Looks like no one’s replied in a while. We have a client who will pay using the 1/4, 1/2/ and 3/4 of an hour increments as follows: From the hour mark to 6 minutes = 0 time paid. In decimal form, this is 7. , numbers of seconds after midnight of that same. Orange line comes out through the data in column F from F30 onward. 16 minutes to 30 minutes = 1/2 hour 30. Example: Start time: 23:50:00 End time: 00:15:00 How would you formulate an equation to determine the duration of time or differnce between the start and end time? Download: Use this time calculator offline with our all-in-one calculator app for Android and iOS. Then, the resulting seconds should be used as a new unix timestamp and read formatted in whatever format you want. There are three different time value sets called G1, G2 and G3. . e. Timesheet: Calculate Time within a period when crossing midnight. Note down the departure and arrival times. But I am having trouble capturing the End. Start. Excel Formula Help To See If Time Falls Between Two Time. Is there any formula to calculate Start time to End time with excluding lunch time? Here is example : Lunch time :12:00pm to 1:00pm. "1d 2h 3m 4s + 4h 5s - 2030s" is an example of a valid expression. Start. 3. First of all, you can calculate the difference between two times by direct substitution. Therefore, dividing the (positive) difference of the SAS time values (i. 3K subscribers Subscribe 16K views 6 years ago If. 1. There are several ways to calculate the difference between two times. increases by about 15° per hour, equal to one hour of R. The sun's position is irrelevant to when a star will be in its meridian; the Sun's coordinates in the RA/dec grid does change over the year. The spreadsheet is set up using four columns: 1. A star's position is fixed in that system and it will be always at the exact same sidereal time that it culminates (as that's the definition of sidereal time). With the “Name” field selected, click Transform (tab) -> Table (group) -> Group By. Re: How to calculate hours when it goes after midnight. Let’s have two dates, 6:03:59 AM and 7:05:10 AM. In Excel I have been trying to find an easier way to calculate a time difference where the times cross midnight. Type in. It is essentially used to set the current time zone and then set a time using the spin buttons. For instance, If the border closes at midnight, and our truck arrives at 10 PM, we should in theory be able to get in line and get across (but I still want the 12 hours crossing time factored in for padding) If we arrive at 11PM and the border closes at. Dates and times are stored together (dates are day counts, stored as the integer portion of the value; times are fraction of a day, stored with the day count as a decimal fraction). Hi, Thanks for the quick reply! I formatted as H:MM but your formula is getting me 7. In the third cell I enter this formula, =INT ( (C163-B163)*24). Hi all, i have a start time (from) and and end time (to) of a shift that can cross midnight. =IF ( (end-start)<0, (end-start)*24+24, (end-start)*24) If you want to see hours and minutes you'd need to. 1. Time_Out is when they stopped work for whatever reason. Cell "G" is calculating the hours: = (D2-C2)+ (B2-A2)+ (D2<A2) Cell "E" is converting the calculation in "G" to a decimal number: =G2*24. Hello everyone, I need some help. I've tried searching the forum but to no avail, I think its probably to do with the custom formatting, I cant use VB to add a colon so format the cells to "00:00" the thing is it works in one column the total paid column using this formula Total paid column custom format [hh]:mm;;Use the latter formula if some of A1:A200 might appear blank. =INT (A1)+1 gives me 8/2/2019, but when walking through the formula, it's just 43678 not 43678. Excel will interpret a TRUE` as 1 (a day) and add it. 2. ,1) is needed just in case the average is in the range "spanning midnight". So I used TIME to add or subtract hours to give a GMT hour (in my columns I and J). Do the normal end-time minus start_time, and then add either 0 or 1 back to it by checking if the start_time. Is there any formula to calculate Start time to End time with excluding lunch time? Here is example : Lunch time :12:00pm to 1:00pm. I want to calculate time difference in milliseconds from current time of a day(11 am , 1 october,2012) and time at midnight for the same day (11 pm 59 m 59s , 1 october , 2012. 5. Enter finish time in B2. You can use the following formula to do so: =(B2-A2 +TRUE)*24. Converts a serial number to a day of the month. 6. m. I need to return the answer both in time (custom hh:mm) and also in decimals. In other words, everything to the left of the decimal is date and everything to the right is time. If you want to subtract a 30 minute break you could do that like this: =B2-A2+ (A2>B2)-"0:30". The following formula computes the time difference between the mid-day and the time at which the object's shadow equals t times the length of the object itself plus the length of that object's shadow at noon: Thus, in the first four schools of thought, Asr = Dhuhr + A (1), and in Hanafi school, Asr = Dhuhr + A (2). #1 I have several sheets with columns of just times (no dates). Example: Start time: 23:50:00 End time: 00:15:00 How would you formulate an equation to determine the duration of time or differnce between the start and end time? If you compare it to the true solar time (which determines when the Sun is in the meridian) as you try, you also have to account for the difference of the mean solar time and the true solar time due to the eccentricity of Earth's orbit; this phenomenon visible as the analemma (which basically visualizes the equation of time) accounts for a. Time. There are penalty rates which apply at different times. Start. Formula is: 29:00 -23:00 results should be 6 hours. The rest of the work sheet is made up of time (hh:mm) and decimals so don't really want to change the format to AM /PM. . Example: Start time: 23:50:00 End time: 00:15:00 How would you formulate an equation to determine the duration of time or differnce between the start and end time? We have a client who will pay using the 1/4, 1/2/ and 3/4 of an hour increments as follows: From the hour mark to 6 minutes = 0 time paid. 1. In this formula, replace C2 with the cell where you have your end date, and replace B2 with the cell where you have your start date. The World Clock – Current time all over the world. Below formula take in to account the time out before/after midnight. In the Date & Time Helper dialog box, do the following operations: In the Formula Type drop down list, please select Date option. In Excel I have been trying to find an easier way to calculate a time difference where the times cross midnight. Basically, we had to apply one of two formulas to compute variable right_hours_slept: (wake_time-bed_time)/3600 if bed_time is "at or after midnight. Present the result in the standard time format. Formula is: 29:00 -23:00 results should be 6 hours. When a post goes over midnight, =24* (C30>D30)+D30-C30 will return 17:30 to 11:00 as 23. You will see the problem when you start. You can use the TIME function to add or subtract up to 60 seconds: =Start time + TIME (0, 0, N seconds) For example, add 30 seconds: =A2+TIME (0,0,30) Or substitute 30 seconds: =A2-TIME (0,0,30) To calculate over 60 seconds, use simple maths:As you can see in image below : SECOND ROW = 40 minutes. with. distance = rate x time. You use the subtraction operator (-) to find the difference between times, and then do either of the. I need to be able to work out the amount of worked time that fits into a certain time period. When calculating overtime pay in California, you must use the employee's "regular rate" of pay — which isn’t always simply an employee's normal hourly amount. Excellent, thanks very much, that worked perfectly. As such, you may want a column for "total hours" to make a few simple formulae for calculating (and makes checking a bit simpler). The time difference is calculated in days. Example: Start time: 23:50:00 End time: 00:15:00 How would you formulate an equation to determine the duration of time or differnce between the start and end time? If I calculate TAT for this time period it should show me 1 hour 33 minutes, why because business hours are closing by 5:00 PM on 10/29 so it should not calculate duration after 5:00 PM to until 08:00 AM on next day, however 10/29 is Friday so formula should calculate the duration from 10/29 Friday 3:37 PM to 10/29 5:00 PM and again it should. We use sidereal time or a clock set to sidereal time to know what R. =C2-B2. ; Express the result as percentages by multiplying it by 100. You have to include the date in both departure and arrival time. The problem is it goes haywire when you. A good thing to remember is that times are always a fraction of 1. Calculating Time With 1/4, 1/2/ And 3/4 Of An Hour Increments - Excel. . I attempted to add one to the end time if the bike ride ends on the next day, but this approach didn't. Then, subtract the minutes and the hours, keeping the result on the appropriate side of the ":" where hours are on the left, and minutes are on the right. Start Date 2. By shirk in forum Excel General Replies: 1 Last Post: 04-06-2021, 10:20 AM. The first question is easily answered: if the end time is before the start time, the time span has crossed midnight. Decide whether you need to pay time-and-one-half or double-time for those hours; then ; Determine the "regular rate" you must use to calculate the overtime pay. =(end_time-start_time)*86400. Same as minutes we can also get the difference in seconds. 6. Enter this formula: =SUM((C2-B2)+(E2-D2))*24 into a blank cell beside your time record cells, F2, for instance, see screenshot: Note: In the above formula: C2 is the lunch start time, B2 is the log in time, E2 indicates the log out time and D2 is. A. 3. Start.