preterlapsed
bypast
bygone
bygones
old
yesterday
past simple
prehodiernal
history
prehesternal
reminisce
ago
historical
retrospection
just then
memento
old time
awent
souvenir
look back
time out of mind
time immemorial
prehistory
recherche du temps perdu
yestertime
yestertide
memory
retrovision
historico-
olden
historicalness
gone
langsyne
old times
auld langsyne
now
departed
lang syne
foregone
good old days
days of yore
past historic
take back
formerly
forecame
retroactive
remember like it was yesterday
nostalgically
retro
ex post facto