Based on the sample data provided, if we take a look at the formula in
C4, on Sheet2, here' s how it's evaluated...

=INDEX(Sheet1!$B$1:$F$1,MATCH(TRUE,INDEX(Sheet1!$B $2:$F$5,MATCH(A4,Sheet1
!$A$2:$A$5,0),0)<"",0))

=====

=INDEX({"Jan","Feb","Mar","Apr","May"},MATCH(TRUE, INDEX({2,3,4,5,6;"",2,4
,6,8;"","","",7,9;"","","","",10},MATCH("A3",{"A1" ;"A2";"A3";"A4"},0),0)<
"",0))

=====

=INDEX({"Jan","Feb","Mar","Apr","May"},MATCH(TRUE, INDEX({2,3,4,5,6;"",2,4
,6,8;"","","",7,9;"","","","",10},3,0)<"",0))

=====

=INDEX({"Jan","Feb","Mar","Apr","May"},MATCH(TRUE, {"","","",7,9}<"",0))

=====

=INDEX({"Jan","Feb","Mar","Apr","May"},MATCH(TRUE, {FALSE,FALSE,FALSE,TRUE
,TRUE},0))

=====

=INDEX({"Jan","Feb","Mar","Apr","May"},4)

....which returns Apr.

Hope this helps!

In article ,
Ananth wrote:

I am too impressed by this solution. It is producing fanatastic results.
However, can you how this is working

"Domenic" wrote:

Assuming that on Sheet1, A1:G5 contains the data, and that on Sheet2,
A2:A5 contains A1, A2, A3, and A4, try the following formula which needs
to be confirmed with CONTROL+SHIFT+ENTER...

C2, copied down:

=INDEX(Sheet1!$B$1:$F$1,MATCH(TRUE,INDEX(Sheet1!$B $2:$F$5,MATCH(A2,Sheet1
!$A$2:$A$5,0),0)<"",0))

Adjust the ranges accordingly.

Hope this helps!

In article ,
Ananth wrote:

A B C D E F G
Project Jan Feb Mar Apr May Total
A1 2 3 4 5 6 20
A2 2 4 6 8 20
A3 7 9 16
A4 10 10



Summary

A B C

Total Savings Starting Month
A1 20 Jan
A2 20 Feb
A3 16 Apr
A4 10 May


Colm B to F show month data, while data under COLM A show project names

When I create the summary report,I want a formula that will show the
First
month under Colmn C, when savings start, I am dealing with rougly 2000
projects spread over in 120 Locations.

Any help please