I want to do a countdown that shows how the hours and minutes remaining of an era pre determined.

A1 = time predetermined 12:00

A2 = hour current NOW() example 09:30

A3 remaining duration = may, 02:30

A3 = # which States that negative values are too long to display.

All three cells are formatted with TIME hh: mm

Can anyone help me please with the cause of this error?

You asked your question in a forum for "other Windows applications"... so what program you want to use?

If Excel, ask here, using the drop-down 'version of Office' to select your version--> http://answers.microsoft.com/en-us/office/forum/excel

Tags: Windows

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