What I have: Issue DOI 8/31/2008 9/7/2008 9/14/2008 9/21/2008 9/28/2008 10/5/2008 10/12/2008 Total Rank 64_1 faj.v64.n1.12 11 15 1 3 1 0 1 "=SUM(table_64[[#This Row],[8/31/2008]:[10/12/2008]])" 9 64_2 faj.v64.n2.11 0 16 8 2 1 2 5 "=SUM(table_64[[#This Row],[8/31/2008]:[10/12/2008]])" 8 64_3 faj.v64.n3.15 0 0 12 7 2 4 2 "=SUM(table_64[[#This Row],[8/31/2008]:[10/12/2008]])" 7 64_4 faj.v64.n4.5 0 0 0 26 6 4 5 "=SUM(table_64[[#This Row],[8/31/2008]:[10/12/2008]])" 7 64_5 faj.v64.n5.6 0 0 0 0 27 15 33 "=SUM(table_64[[#This Row],[8/31/2008]:[10/12/2008]])" 6 64_6 faj.v64.n6.9 0 0 0 0 0 37 48 "=SUM(table_64[[#This Row],[8/31/2008]:[10/12/2008]])" 6 What I want: DOI Live Date Week 1 Week 2 Week 3 Week 4 Week 5 faj.v64.n1.12 8/31/2008 11 15 1 3 1 faj.v64.n2.11 9/7/2008 16 8 2 1 2 faj.v64.n3.15 9/14/2008 12 7 2 4 2 faj.v64.n4.5 9/21/2008 26 6 4 5 faj.v64.n5.6 9/28/2008 27 15 33 faj.v64.n6.9 10/5/2008 37 48 Starting thoughts… 0 7 14 Issue Live Date Week 1 Week 2 Week 3 Notes faj.v64.n1.12 8/31/2008 "=HLOOKUP($B21, table_64[[#All],[DOI]:[10/12/2008]], MATCH($A21, table_64[[#All],[DOI]], 0), TRUE)" "=HLOOKUP($B21+E$19, table_64[[#All],[DOI]:[10/12/2008]], MATCH($A21, table_64[[#All],[DOI]], 0), TRUE)" hlookup + match works if I copy the header cells from table_64 faj.v64.n2.11 39698 "=HLOOKUP($B22, table_64[[#All],[DOI]:[10/12/2008]], MATCH($A22, table_64[[#All],[DOI]], 0), TRUE)" "=HLOOKUP($B22+E$19, table_64[[#All],[DOI]:[10/12/2008]], MATCH($A22, table_64[[#All],[DOI]], 0), TRUE)" typing in the date directly does not work - which is needed (live dates aren't necessarily on week start) faj.v64.n3.15 9/14/2008 "=HLOOKUP($B23, table_64[[#All],[DOI]:[10/12/2008]], MATCH($A23, table_64[[#All],[DOI]], 0), TRUE)" "=HLOOKUP($B23+E$19, table_64[[#All],[DOI]:[10/12/2008]], MATCH($A23, table_64[[#All],[DOI]], 0), TRUE)" faj.v64.n4.5 9/21/2008 "=HLOOKUP($B24, table_64[[#All],[DOI]:[10/12/2008]], MATCH($A24, table_64[[#All],[DOI]], 0), TRUE)" "=HLOOKUP($B24+E$19, table_64[[#All],[DOI]:[10/12/2008]], MATCH($A24, table_64[[#All],[DOI]], 0), TRUE)" Dates in table_64 came in from a csv file as 31-Aug-08 and were then corrected with error checking to show 4 digit year faj.v64.n5.6 9/28/2008 "=HLOOKUP($B25, table_64[[#All],[DOI]:[10/12/2008]], MATCH($A25, table_64[[#All],[DOI]], 0), TRUE)" "=HLOOKUP($B25+E$19, table_64[[#All],[DOI]:[10/12/2008]], MATCH($A25, table_64[[#All],[DOI]], 0), TRUE)" "I've tried reformatting the dates, adding zero to them, using datevalue and pasting the value back in" faj.v64.n6.9 10/5/2008 "=HLOOKUP($B26, table_64[[#All],[DOI]:[10/12/2008]], MATCH($A26, table_64[[#All],[DOI]], 0), TRUE)" "=HLOOKUP($B26+E$19, table_64[[#All],[DOI]:[10/12/2008]], MATCH($A26, table_64[[#All],[DOI]], 0), TRUE)" I even tried copying the data out of the table and retyping the headers by hand for a whole new set of issues