Table:
0
A
B
C
D
E
1
Event
PDT (-7 UTC)
MDT (-6 UTC)
CDT (-5 UTC)
EDT (-4 UTC)
2
Start penumbral (P1)
1:55 a.m.
2:55 a.m.
3:55 a.m.
4:55 a.m.
3
Start umbral (U1)
3:17 a.m.
4:17 a.m.
5:17 a.m.
6:17 a.m.
4
Greatest eclipse
4:38 a.m.
5:38 a.m.
6:38 a.m.
Set
5
End umbra (U4)
6:00 a.m.
Set
Set
Set
6
End penumbral (P4)
Set
Set
Set
Set

Questions and formulas:
Question: What time is CDT when EDT is 4:55 a.m.?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,E1="4:55 a.m."),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,E2:E6="4:55 a.m."),4))
Level: medium
Question: What is the time for PDT when CDT is 6:38 a.m.?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,D1="6:38 a.m."),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,D2:D6="6:38 a.m."),2))
Level: medium
Question: What time is CDT when PDT is 3:17 a.m.?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,B1="3:17 a.m."),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,B2:B6="3:17 a.m."),4))
Level: medium
Question: What time is MDT when EDT is set and PDT is 6:00 a.m.?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(E1="set")*(B1="6:00 a.m.")),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,(E2:E6="set")*(B2:B6="6:00 a.m.")),3))
Level: medium