D
daddylonglegs
This formula will give next first Tuesday at noon, based on a cutoff of noon
on the 1st Tuesday
=FLOOR(EOMONTH(FLOOR(A1+3.5,7)-4,0)+4,7)+3.5
similarly this will give last Thursday at noon also based on a cutoff at
noon on last Thursday
=FLOOR(EOMONTH(FLOOR(A1+1.5,7)+5,0)+2,7)-1.5
Note: only works correctly with 1900 date system
on the 1st Tuesday
=FLOOR(EOMONTH(FLOOR(A1+3.5,7)-4,0)+4,7)+3.5
similarly this will give last Thursday at noon also based on a cutoff at
noon on last Thursday
=FLOOR(EOMONTH(FLOOR(A1+1.5,7)+5,0)+2,7)-1.5
Note: only works correctly with 1900 date system