Without a macro, although if you wanted a macro I'd simply perform these steps with a macro
1. Add a new column A and in A2 enter and copy this down
2. Add the formula , i.e. the first Thursday to the next blank cell in column D
3. Add the formula , i.e. where D32 is the cell containing the formula above. Copy this down
4. Copy this down for n / 5 rows where n is the number of rows in the data
5. Now sort the data on column D ascending
6. Autofilter for blanks in column C, then select all the visible dates in column D that you've added and delete them and remove the autofilter
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