Excel 2003 make 1 date cell automatically change another date cell

[Scotty]

I am using Excel 2003 and within a new spread sheet that I am creating I have
2 cells with dates in them. 1 cell is the date that the equipment was
inspected and the other cell is the date that the equipment needs re
inspection.
When this spread sheet is completed I would like to only change the date in
the inspection date cell and if available there be a formula to automatically
change the retest date.

 

[T. Valko]

Ok, so what is the frequency for a retest?

Let's assume the retest is due in 7 days. Just add 7 days to the inspection
date.

A1 = inspection date
B1 = formula

=IF(A1="","",A1+7)

 

[Matt Geare]

Hi Scotty,

This is possible. At it's simplest if the retest date is 100 days later the
formula in the retest date cell would be = inspection date cell + 100.

There are many date related functions that can be used to refine this
process, for example EOMONTH which is useful for returning dates at the "End
of the Month".

If you would like to be more specific about the relationship between the
inspection date and the retest date I'm sure you will find additional help
here, else you might want to explore the date related functions on your own.

All the Best,

Matt

 

[Scotty]

Some of the equipment needs reinspecting every 3 months some every 6 months
and others can be from 12 months to 4 years is there a formula that I can
place in the reinspection date column so that it counteracts with the set
amount of days for each month without been set to a rounded number like 90
days ( eg. Aug = 31 days Sep=30 days Oct=31 days overall = 92 days )

 

[David Biddulph]

=DATE(YEAR(A1),MONTH(A1)+3,DAY(A1)) for 3 months