Creating regular time slots in Calc

Hi All,

I am trying to produce a timesheet with 15 minutes intervals, but my current approach

07:00-07:15
07:15-07:30
07:30-07:45
07:45-08:00
08:00-08:15

is pretty tedious because I have not figured out how to automagically create said intervals. Any suggestion will be gratefully received!

If you just use the startt ime of the 15 minute intervals:

07:00
07:15

Select both and drag down with the handle at bottom right of lower cell.

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If your cells contain not text, but date/time, then try to select two cells and drag down. Calc should detect the difference between the two cells as increment.
.
The other option would be to use a formula and add the 15 minutes to the value of the upper cell, then drag down the formula.

Apologies for being a luddite, but how do I put date/time in the cells? at the moment is ‘typed by hand’ text

If you are new to spreadsheets perhaps you could read the Calc Guide online. If you prefer you can download a PDF version.

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enter 7:30 into some Cell and calc interpretes it as 7 hours and 30 minutes.

nitpicking: its exactly interpreted as Date 1899-12-30 7:30

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Mine
Untitled 1.ods (27.7 KB)