working with times and dates

paulsolar

Well-known Member
Joined
Aug 21, 2013
Messages
670
Office Version
  1. 365
Hi All

I've learned quite a lot about working with dates but never worked with times.

I have to do some tidal calculations and need to calculate a time 3 hours and 5 mins before high water (I literally have to deduct 3 hours and 5 mins from the high water time which I have in column B) the problem is that if the high water time is say 02.30 hrs, deducting 3 hours and 5 mins the date would be the day before, the dates are in column A.

What I would like to do is in column E have the correct date, the date will always be the same as that in column A unless deducting 3 hours and 5 mins moves it back to day before and enter this in column F have the revised time.

Sounds simple:ROFLMAO:, I've been at this all afternoon going around in ever decreasing circles and not getting anywhere.

Is there a simple solution to this?? I am on the verge of throwing my laptop out of the window.

Any help would be greatly appreciated

Cheers

Paul
 
Last edited:

Excel Facts

Move date out one month or year
Use =EDATE(A2,1) for one month later. Use EDATE(A2,12) for one year later.
Something like this?
Excel Workbook
ABCDEF
1DateTime HTDateTime
29/2/20195:00 AM9/2/20191:55 AM
39/2/20192:30 AM9/1/201911:25 PM
49/6/20198:00 PM9/6/20194:55 PM
59/8/20191:25 AM9/7/201910:20 PM
Sheet
 
Upvote 0
Well Date and Time is really a single value. Its just like any other number where Date is to the left of the decimal and Time is to the Right.

Using Ahoy's mockup,
Code:
=A+B-TIMEVALUE("3:05")
Format to include the display of Time such as "m/d/yyyy h:mm AM/PM"
 
Upvote 0
Hi Guys

thanks very much for you replies. I have managed to get it done now with your help. I was having a real problem with this.

Thanks Again

Paul
 
Upvote 0

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