Excel Time Conversion Process Question

KuraiChikara

Board Regular
Joined
Nov 16, 2016
Messages
111
Office Version
  1. 2013
Platform
  1. Windows
Hello,
I know how to convert time say ET to MT but my question is on the process on WHY Excel does what it does.

Example:
A1 you have ET and B1 you have the MT formula conversion. Using this simple formula will work, but not for all time frames:
=A1-"02:00"

It can do AM to AM and PM to AM: IE 18:00 turns into 16:00, 07:00 turns into 05:00.
What it CANT do, is go from AM to PM: IE 01:00 ET will return ############# instead of 23:00 MT

To fix that, the formula just gets a little more detailed IE:
=24+A1-"02:00"

This fixes the problem, instead of a never ending sequence of # symbols, it returns 23:00.

My question is, why do the ###### come back as a result with the first formula? This is not a data length issue because no matter how far I stretch the cell, the pound symbols don't go away, so what is that error called? It's not #DIV.0!, #N/A, #NA ME?, #NULL !, #NUM !, #REF ! or #VALUE ! yet it doesnt return any data.
 

Excel Facts

Which lookup functions find a value equal or greater than the lookup value?
MATCH uses -1 to find larger value (lookup table must be sorted ZA). XLOOKUP uses 1 to find values greater and does not need to be sorted.
Simple answer is excel wont display negative time. The value is still there as it happens. Time is just a fraction of 1. Midday is 0.5 for example.
 
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