time calculations

jtodd

Board Regular
Joined
Aug 4, 2014
Messages
194
Hi
I have a sheet that works out hours worked which all works fine till I hit exactly midnight .( see extract)
I am using this formula =(IF(F18>E18,F18-E18,24-E18+F18))-"00:30" (half an hour lunch)
I am using [h]:mm to format the totals but as you can see it does not work for the bottom 2

<colgroup><col style="mso-width-source:userset;mso-width-alt:4022;width:83pt" width="110"> <col style="mso-width-source:userset;mso-width-alt:4022;width:83pt" width="110"> <col style="mso-width-source:userset;mso-width-alt:2998;width:62pt" width="82"> <col style="mso-width-source:userset;mso-width-alt:4022;width:83pt" width="110"> <col style="mso-width-source:userset;mso-width-alt:4022;width:83pt" width="110"> <col style="mso-width-source:userset;mso-width-alt:2779;width:57pt" width="76"> </colgroup><tbody>
</tbody>

<colgroup><col style="width:48pt" span="3" width="64"> <col style="mso-width-source:userset;mso-width-alt:2084; width:43pt" span="2" width="57"> <col style="width:48pt" span="5" width="64"> </colgroup><tbody>
[TD="class: xl66, width: 64"]Start
[/TD]
[TD="class: xl66, width: 64"]Finnish
[/TD]
[TD="class: xl66, width: 64"]Hours[/TD]
[TD="class: xl66, width: 57"]Start [/TD]
[TD="class: xl66, width: 57"]Finnish [/TD]
[TD="class: xl66, width: 64"]Hours[/TD]
[TD="class: xl66, width: 64"]Start [/TD]
[TD="class: xl66, width: 64"]Finnish [/TD]
[TD="class: xl66, width: 64"]Hours[/TD]
[TD="class: xl66, width: 64"]Total [/TD]

[TD="class: xl68"]06:00[/TD]
[TD="class: xl68"]14:00
[/TD]
[TD="class: xl65"]07:30[/TD]
[TD="class: xl68"]06:00[/TD]
[TD="class: xl68"]16:00[/TD]
[TD="class: xl65"]09:30[/TD]
[TD="class: xl68"]06:00[/TD]
[TD="class: xl68"]14:00[/TD]
[TD="class: xl65"]07:30[/TD]
[TD="class: xl67"]24:30
[/TD]

[TD="class: xl68"]06:00[/TD]
[TD="class: xl68"]14:00[/TD]
[TD="class: xl65"]07:30[/TD]
[TD="class: xl68"]06:00[/TD]
[TD="class: xl68"]16:00[/TD]
[TD="class: xl65"]09:30[/TD]
[TD="class: xl68"]06:00[/TD]
[TD="class: xl68"]14:00[/TD]
[TD="class: xl65"]07:30[/TD]
[TD="class: xl67"]24:30
[/TD]

[TD="class: xl68"]12:00[/TD]
[TD="class: xl68"]00:00[/TD]
[TD="class: xl65"]11:30[/TD]
[TD="class: xl68"]12:00[/TD]
[TD="class: xl68"]00:00[/TD]
[TD="class: xl65"]11:30[/TD]
[TD="class: xl68"]12:00[/TD]
[TD="class: xl68"]01:00[/TD]
[TD="class: xl65"]12:30[/TD]
[TD="class: xl67"]1691:30[/TD]

[TD="class: xl68"]12:00[/TD]
[TD="class: xl68"]00:00[/TD]
[TD="class: xl65"]11:30[/TD]
[TD="class: xl68"]12:00[/TD]
[TD="class: xl68"]00:00[/TD]
[TD="class: xl65"]11:30[/TD]
[TD="class: xl68"]12:00[/TD]
[TD="class: xl68"]01:00[/TD]
[TD="class: xl65"]12:30[/TD]
[TD="class: xl67"]1691:30
[/TD]

</tbody>

Presume it is something to do with the formatting of the Total , unless there is a better approach ?
 

Excel Facts

Why are there 1,048,576 rows in Excel?
The Excel team increased the size of the grid in 2007. There are 2^20 rows and 2^14 columns for a total of 17 billion cells.
Time is a fickle thing in Excel as it's a number masked to look like time. Could very well be you've copied time from a previous entry and it's 70 days in the past...

Use the MOD function to get round this


Book1
ABCDEFGHIJ
1StartFinnishHoursStartFinnishHoursStartFinnishHoursTotal
206:0014:0007:3006:0016:0009:3006:0014:0007:3024:30:00
306:0014:0007:3006:0016:0009:3006:0014:0007:3024:30:00
412:0000:0011:3012:0000:0011:3012:0001:0012:3035:30:00
512:0000:0011:3012:0000:0011:3012:0001:0012:3035:30:00
Sheet1
Cell Formulas
RangeFormula
I2=MOD(H2-G2, 1)-TIMEVALUE("00:30:00")
J2=I2+F2+C2
C2=MOD(B2-A2, 1)-TIMEVALUE("00:30:00")
F2=MOD(E2-D2, 1)-TIMEVALUE("00:30:00")
 
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