Hi, I've got a MATCH function and it's being really temperamental with time values.

Its referencing a data with that from a list of times in 5 minute intervals, so for example I have a value:

15/05/2013 09:00:00 (number 41409.375) being looked for in a list of numbers calculated using =IFERROR(MATCH(D157,'Energy Data'!$D:$D,0),"") where D157 is the 09:00, and 'Energy Data', column D is the list of times.

It works fine half the time, for example the above comes with row 12792.

But, and I've had this problem before in excel, if I have the same function on 14/05/2013 08:35:00 (41408.35763888890000), and I've checked the list contains 41408.35763888890000 but the function sill returns a blank (N/A for the match).

The thing is, even if I do a =D156='Energy Data'!C12499, it returns TRUE, so excel recognises they are equal!

If I copy and paste one cell value into the other, it manages to get them with the MATCH, so it thinks they are different. Somehow.

Has anyone come across this before? Any work around?