0 If you do something for old times' sake, you do it in order to remember a happy time that you had in the past:
We should all meet up again - just for old times' sake.
1 done as a reminder of the good times you had in the past:
Let me buy you lunch, for old times’ sake.
NYA ORD
European
May 10, 2021
DAGENS ORD
Shimmer
for old times' sake