Time Rounding Up Question Access VBA

Posted on 2016-08-26
Last Modified: 2016-08-27
The following code successfully rounds DOWN my time NOW() to the nearest 5 minutes, but I am struggling to edit it to round UP.

Me.txtStart.Value = CDate((1 * (Int(Now() / (1 * (1 / 288)))) * (1 / 288)))

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How can I do this please? I am trying to get away without a function.
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Author Comment

ID: 41772358
Hmmm, is this it?

Me.txtFinish.Value = (CDate(Round(DateAdd("n", 3, Now()) * 288, 0) / 288))

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Seems it might be about right.
LVL 50

Accepted Solution

Gustav Brock earned 500 total points
ID: 41772444
This will do:

Dim datTime As Date

datTime = Now

Me!txtFinish.Value = DateValue(datTime) + TimeSerial(Hour(datTime), -Int(-Minute(datTime) / 5) * 5, 0)

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LVL 26

Expert Comment

ID: 41772496
I am trying to get away without a function.
And /gustav's might be good too.
I didn't test it

Here's mine

Me.txtStart.Value = CDate(Int(Now) + (Int((CDbl(Now) - Int(Now)) * 24 * 12) + 1) / (24 * 12))
Here's the logic
We're going to coerce the date to a Double and remove the day part
CDbl(Now) - Int(Now)
That leaves us with the fraction of the day
There's 24 hours in a day and 12 five minute periods in an hour, so we'll change the fraction into 5 minute periods
CDbl(Now) - Int(Now) *24*12
Now we'll truncate that to get rid of fractional sub 5 minute amounts
Int(CDbl(Now) - Int(Now) *24*12)
Then add one to round up
Int(CDbl(Now) - Int(Now) *24*12) + 1
Convert it back to a fraction of a day
(Int(CDbl(Now) - Int(Now) *24*12) + 1)/(24*12)
Add the date whole number back on
Int(Now) + (Int(CDbl(Now) - Int(Now) *24*12) + 1)/(24*12)
And coerce it to a date
CDate(Int(Now) + (Int(CDbl(Now) - Int(Now) *24*12) + 1)/(24*12))

But a function would make for much more maintainable code!
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LVL 75
ID: 41772513
gustav's is always good, as he is the Master of all things date, time and rounding :-)
LVL 26

Expert Comment

ID: 41772534
I've remarked on that and suggested an Article should be written
Alas!  It hasn't been forthcoming.

But the ask was for 'not a function'
You can turn /gustav's into 'not a function' but it doesn't start that way.

It's been a while since I've played with Hijri dates.
Those were interesting questions.
Depending on many things, a day can be the last day of the month in one country and the first day of the month in another.
LVL 50

Expert Comment

by:Gustav Brock
ID: 41772675
I've remarked on that and suggested an Article should be written
Alas!  It hasn't been forthcoming.
I know and remember just too well, and I'm about it - turns out as a major task.

But the ask was for 'not a function'
That's why I didn't write a function ... just inserted two lines before the existing code line.


Author Closing Comment

ID: 41772692
Thank you Gustav worked first time.

Why do I want to get away without a function? It's just easier for me in this situation.

Author Comment

ID: 41772693
Nick thank you too :-)

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