Table:
0
A
B
C
D
E
1
June 10-11
March 27-29
January 15-16
November 3
August 21-22
2
June 10, 1964
March 28, 1968
January 16, 1972
November 3, 1975
August 22, 1979
3
127
129
131
133
135
4
June 11, 1983
March 29, 1987
January 15, 1991
November 3, 1994
August 22, 1998
5
137
139
141
143
145
6
June 10, 2002
March 29, 2006
January 15, 2010
November 3, 2013
August 21, 2017
7
147
149
151
153
155

Questions and formulas:
Question: How many times does November 3rd occur when January 15, 1991 does?
Formula: ROWS(UNIQUE(FILTER(D1, C1="January 15, 1991")))
Formula2: ROWS(UNIQUE(FILTER(D2:D7, C2:C7="January 15, 1991")))
Level: medium
Question: When November is 153 what is the March number?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,D1="153"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,D2:D7="153"),2))
Level: medium
Question: How many times does an occurance happen in June when it happens on NOvember 3, 1975?
Formula: ROWS(UNIQUE(FILTER(A1, D1="November 3, 1975")))
Formula2: ROWS(UNIQUE(FILTER(A2:A7, D2:D7="November 3, 1975")))
Level: medium
Question: When march is 129 what is the August number?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,B1=129),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,B2:B7=129),5))
Level: medium
Question: How many numbers are there for August when March is 139?
Formula: ROWS(UNIQUE(FILTER(E1, B1=139)))
Formula2: ROWS(UNIQUE(FILTER(E2:E7, B2:B7=139)))
Level: medium