calculate time included break

[zico8]

hi,
I have datetime in cells A1:D1

A1: 2018-12-03 06:00 (day work start);
A2: 2018-12-03 10:00 (breakfast break start);
A3: 2018-12-03 11:00 (breakfast break stop);
A4: 2018-12-03 15:00 (day work stop);

So normally this is 9hrs work day with 1hr break included. The workers are payed for 8hrs work.


At cells C1, and C2 I would like to add datetime when the worker is absent.

How can I calculate at C3 the correct time the worker should be payed for??


For example:
C1: 2018-12-03 08:00 (start workers absent)
C2: 2018-12-03 12:00 (stop workers absent)
C3 (result): 05:00 (2hrs work before breakfast break plus 3hrs work after it)

I have no idea how to handle it

 

[oldbrewer]

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[TD]name[/TD]
[TD]START[/TD]
[TD]out[/TD]
[TD]in[/TD]
[TD]out[/TD]
[TD]in[/TD]
[TD]out[/TD]
[TD]in[/TD]
[TD]out[/TD]
[TD]in[/TD]
[TD]LEAVE[/TD]
[TD]hours pay[/TD]
[TD]OVERTIME[/TD]
[TD]above[/TD]
[TD="align: right"]08:00[/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD]fred[/TD]
[TD="align: right"]07:00[/TD]
[TD="align: right"]11:00[/TD]
[TD="align: right"]12:00[/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
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[TD][/TD]
[TD="align: right"]16:00[/TD]
[TD="align: right"]08:00[/TD]
[TD="align: right"]00:00[/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD]bill[/TD]
[TD="align: right"]07:00[/TD]
[TD="align: right"]10:05[/TD]
[TD="align: right"]10:20[/TD]
[TD="align: right"]11:00[/TD]
[TD="align: right"]12:00[/TD]
[TD="align: right"]14:10[/TD]
[TD="align: right"]14:30[/TD]
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[TD="align: right"]17:50[/TD]
[TD="align: right"]09:15[/TD]
[TD="align: right"]01:15[/TD]
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[TD="colspan: 4"]you can have as many out-ins as you like[/TD]
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[TD="colspan: 3"]formula giving 08:00 for Fred[/TD]
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[TD="colspan: 4"]=K2-B2-(D2-C2)-(F2-E2)-(H2-G2)-(J2-I2)[/TD]
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</tbody>[/TABLE]