Calculating Time Across A 24 Hour Period

Nov 6, 2007

Calculate certain time increments for various work-shifts. I have a start time,finish time and increments of time across the spectrum of 24 hours. There are also multiple start time across the 24 hour period with some start times begining on one day and ending on the next day.

Example

In B5 Startime is 22:00
In C5 Finishtime is 06:30

In I3 increment begins at 00:00
In I4 increment ends at 00:30

The employee working the shift from 22:00 - 06:30 would fall into the time increment of 00:00 - 00:30 where another employee working a different shift (08:30 - 17:00) would not. I'm looking for a formula that would return a 1 in a cell if the employee fell into the 00:00 - 00:30 time increment and a 0 in a cell in the employee did not fall into the time increment.

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Calculating Data Within Past 24 Hour Time Period

Jun 7, 2014

I am a flight instructor and legally we cannot work more than 8 hours in any consecutive 24 hour period. I'm trying to create a spreadsheet that will calculate the totals from that 24 hour period for me.

Right now I have something that sort of works, but not the way I would like it. I have a column for "time" that has the date and ending time of the flight and I am using that as if the total flight occurred at one moment (the ending time).

So, for instance let's say I did these flights

1: 8AM-10AM (2 hours, clocked at 10AM)
2: 11AM - 2 PM (2 hours, clocked at 2PM)
3: 7AM-9AM the following day (2 hours, clocked at 9AM)

If I have my formula calculate the time for 9AM the following day (totaling the past 24 hours) the first flight won't be included in the calculation since the hours from that flight is only imputed at 10AM. The formula would read 4 hours rather than the (actual) 5 hours.

Here is my workbook : 8 hour calculator sample.xlsx

Here are the formulas I am using

The time is formulated at date and time, with time being the ending flight time

The start time for the calculation is

[Code]....

end time is just =NOW()

Total calculation is

[Code] .....

All I'm trying to do is use the totals under "flight start" and "flight end" instead of the end flight time I had to put in under the date column.

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Total should equal 26:30 (26 and a half hours), however I get returned 02:30. I assume it is down to the 24 hour clock and I so I tried adding 24 to it in the formula bar to get the right answer and it didn't work.

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min: .33333
max: 1.35
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I have created a daily schedule which has a number of factory variables taken into consideration which determine the date and time a particular product should, barring any mechanical problems, come off the machine. (see attached spreadsheet).

The date at the top will be editable by me only so that when I update the production quantities, the “date/time off” column automatically re-adjusts to the remaining quantities.

The formulas are a little long winded, but I have left them that way whilst I try and develop it. I should be able to figure out how to condense them later.

My problem is that the “date/time off” on the right works excellent, but over a 24 hr period.

Ordinarily, we work a 12 hour day (6am to 6pm) with overlapping shifts to cover breaks, and 20 mins warm up at the start of the day for the machine, thus maximising a 12 hour day.

Of course if demand exceeds the allotted time we put on overtime.

Is it possible to specify that normal days are only 12 hours so that if a product exceeds 6pm, it flows into the next day with the balance starting at 6:20am?

And, if the production for the week exceeds the time could I stipulate particular days which we deem are suitable for overtime? Ie, we decide Wednesday is a 14 hour day and not 12.

I had toyed with the idea of creating a 365 day table/calendar, on another worksheet which would have its individual allocated hours in an adjacent column and somehow link them to the date/time off, perhaps by way of a VLOOKUP, but I have been chasing my tail trying to figure out how to implement it.

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other example:

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is there a way to calculate this in VBA?

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June 6, 2006

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