Tools/ Options/ Calculation: 1904 date system
but beware if you need to transfer data to and fro between 1900 and 1904
date systems.
--
David Biddulph

"First Aid Computing" wrote in
message ...
This works well. Now to figure out how to have it display negative
seconds
as - instead of ############.

"Rick Rothstein" wrote:

In Excel, Time is the fraction of a day that has passed for the given
time
(for example, 3:00 AM is 3/24 (or 0.125) of a 24-hour day.

To convert seconds (assumed to be in A1), use this... =A1/86400

To convert minutes (assumed to be in B1), use this... ==B1/1440

Custom Format the cells using this pattern... mm.ss.00 in the Type field.

Note: The 86400 comes from multiplying 24 (hours in a day) times 60
(minutes
in an hour) * 60 (seconds in a minute); the 1440 comes from multiplying
24
(hours in a day) times 60 (minutes in an hour).

--
Rick (MVP - Excel)


"First Aid Computing" <First Aid
wrote
in message ...
Greetings. I have recently been handed a project dealing with process
times.
I have one set of numbers as seconds (ss.ssssssss) and one as a decimal
version of minutes (.91 m). What process do I need to know to convert
these
numbers into a workable format. I'm hoping to have them as mm:ss.ss
and
then
doing basic math with the results. Thanks in advacne.