Table:
0
A
B
C
D
E
1
Episode
Date
Time
Network
Length
2
One
7/02/08
7:00 PM ET
ESPN2
1 Hour
3
Two
7/21/08
7:30 PM ET
ESPN2
30 mins
4
Three
7/31/08
7:30 PM ET
ESPN2
30 mins
5
Four
8/05/08
7:00 PM ET
ESPN2
30 mins
6
Five
8/05/08
7:30 PM ET
ESPN2
30 mins

Questions and formulas:
Question: What date was the episode that aired at 7:30 pm ET?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="7:30 pm et"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,C2:C6="7:30 pm et"),2))
Level: medium
Question: What date did episode one air on?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,A1="one"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,A2:A6="one"),2))
Level: medium