Table:
0
A
B
C
D
E
F
G
H
1
Season
Grand FinalDate
WinningTeam
Score
LosingTeam
Location
GF Attendance
Clive Churchill Medal
2
1988
11 September 1988
Canterbury Bulldogs (6)
24-12
Balmain Tigers
Sydney Football Stadium , Sydney (1)
40,000
Paul Dunn
3
1989
24 September 1989
Canberra Raiders (1)
19-14 (aet)
Balmain Tigers
Sydney Football Stadium , Sydney (2)
40,500
Bradley Clyde
4
1990
23 September 1990
Canberra Raiders (2)
18-14
Penrith Panthers
Sydney Football Stadium , Sydney (3)
41,535
Ricky Stuart
5
1991
22 September 1991
Penrith Panthers (1)
19-12
Canberra Raiders
Sydney Football Stadium , Sydney (4)
41,815
Bradley Clyde
6
1992
27 September 1992
Brisbane Broncos (1)
28-8
St. George Dragons
Sydney Football Stadium , Sydney (5)
41,560
Allan Langer
7
1993
26 September 1993
Brisbane Broncos (2)
14-6
St. George Dragons
Sydney Football Stadium , Sydney (6)
42,329
Brad Mackay
8
1994
25 September 1994
Canberra Raiders (3)
36-12
Canterbury Bulldogs
Sydney Football Stadium , Sydney (7)
42,234
David Furner

Questions and formulas:
Question: I want the Grand Final Date for season 1988
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:H1,A1=1988),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:H8,A2:A8=1988),2))
Level: medium