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T-buch
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Joined: 04 Mar 2009
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Location: Danmark (Denmark), København
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 Posted: Wed Feb 16, 2011 1:41 pm Post subject: Minus 25 sec from a timecode |
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I got a value written in the code [TT]:MM:SS,00 for instance: 00:00:30,08
I want to minus 25 sec from that value so the result should be 00:00:05,08
How can I do that?
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Thomas Buch |
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Robert Tucker
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Location: Manchester UK
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| Posted: Wed Feb 16, 2011 1:56 pm Post subject: |
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-25/24/60/60
Calc works on time as a number and decimal fraction of days.
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T-buch
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Joined: 04 Mar 2009
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Location: Danmark (Denmark), København
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| Posted: Wed Feb 16, 2011 2:28 pm Post subject: |
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Thanks
But I cannot figure it out how I should understand the "format code": "25/24/60/60 "
first you take 25 seconds, then 24 hours, then 60 minutes and at last 60 seconds
- why is it not:
-24/60/85??? I
If you want to minus (or add) 25 minutes from the value in stead - how do you do that?
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Thomas Buch |
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Sliderule
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Joined: 29 May 2004
Posts: 2474
Location: 3rd Rock From The Sun
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| Posted: Wed Feb 16, 2011 2:51 pm Post subject: |
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Thomas Buch:
Let us assume your TIME value is in cell A2 . . . the following formula will provide the result you want:
| Code: | | =TIME(HOUR(A2); MINUTE(A2); SECOND(A2) - 25) |
Explanation: Using the TIME function, will return the HOUR, MINUTE and SECOND from the original cell, and, subtract 25 from the SECOND portion . . . per your description.
I hope this helps, please be sure to let me / us know.
Sliderule
Thanks to add [Solved] in your first post Title ( edit button ) if your issue has been fixed / resolved. |
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T-buch
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Joined: 04 Mar 2009
Posts: 12
Location: Danmark (Denmark), København
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| Posted: Thu Feb 17, 2011 2:57 am Post subject: |
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Yes thanks, Sliderule - This is easy to understand - but i would also love to understand what is happening in post 2 by Robert Tucker - so I allow myself to wait a little more before adding a "Solved" hoping he or another will explain
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Thomas Buch |
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Villeroy
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Joined: 04 Oct 2004
Posts: 10065
Location: Germany
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| Posted: Thu Feb 17, 2011 3:53 am Post subject: |
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All dates and times in all spreadsheets are formatted numbers in unit "Days".
You may read any old book on spreadsheets, even 20 year old books, where all this is explained in depth.
You add 5 to a number in order to add 5 days.
You add 5/24 to a number in order to add 5 hours.
You add 5/24/60 to a number in order to add 5 minutes.
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