era
The film evocatively recreates a bygone era that few people under the age of 60 will remember.
In a bygone era, this kind of language was all too common.
The shells of the factories are a testament to a bygone era when the city was an industrial powerhouse.

SMART Vocabulary: related words and phrases

In the past
ago
any moreidiom
anymore
back in the dayidiom
back thenidiom
clock
departed
dim
flood
mist
moon
more
no longeridiom
non-current
rewind the clockidiom
sometime
step
step back (in time)idiom
the mists of timeidiom
the status quo ante