halcyon days
good old days
dewy-eyed
nostalgically
nostalgize
nostophobia
nostalgism
reminisce
roll back the years
take back
yearn
nostalgiac
bygone
nostalgic
reminiscence
langsyne
earlier on
old days
old times
set one's watch back
auld langsyne
lang syne
reflective
anemoia
send back
pastness
ain't what it used to was
yestertime
yestertide
old time
flash back
forelay
memory
look back
bypast
prehesternal
gone
preterlapsed
back in the day
formerly
you can't go home again
prehodiernal
retrospection
nostalgist
souvenir
memento
flashback
past
retrospect
cast one's mind back
retro-nostalgia
whilom
historical
recherche du temps perdu
blove
just then
nonrecently
long ago
misremembrance
forespoke
retro-
one day
by now
reminiscenceful
foregave
remember like it was yesterday
retrograde
flashbulb moment
time immemorial
yesterday
awent
age-old
time out of mind
pluperfect
way back when
for old times' sake
days of yore
antique
old timey
past simple
before
earlier
querencia
foreheld
precontemporary
previously
antecedently
long memory
elder
memory image