Excel Conditional Format AND Statement

Question

I have a spreadsheet with the days of the month (in DD/MM/YYYY format) running across row 1 and values in each column downwards that correspond to the day above, with a trigger value in the last column, for example:

02/01/2000|03/01/2000|trigger

1000 |1000 |1100

560 |3400 |1000

Where 02/01/2000 is in A1

I'm looking to create a conditional formatting statement to colour cells that have a corresponding row 1 WEEKDAY value of Sunday (7), and if they're lower in value compared to the trigger value for their row.

For example, format A2:B2 if A1:B1 is a Sunday and A2:B2 < C2 which I'd like to format A2 but leave B2 as it doesn't meet the Sunday criteria.

Then format A3:B3 if A1:B1 is a Sunday and A3:B3 < C3 in which A3 is lower than C3 but it's corresponding date above in A1 isn't a Sunday.

I know I can format cells based on their weekday with =WEEKDAY(A1:B1)=7 and compare values in the row to the trigger value with =A2:B2=<$C$2 but any attempts to combine the two doesn't seem to work (and without an absolute cell reference for C2, that formula seems to highlight the wrong cells).

I would appreciate any suggestions or help!

Answer 1

_{format A2:B2 if A1:B1 is a Sunday and A2:B2 < C2 ... Then format A3:B3 if A1:B1 is a Sunday and A3:B3 < C3}

Grab all of column A:B with A1 as the 'active cell' and create a CFR based on this formula,

=and(weekday(a$1)=1, a1<c1, row()>1)