In eastern Germany, after the Berlin wall fell, there was a split in how time was referenced “vor der Wende” or “nach der Wende” as the change was so fundamental to all aspects of society.
We may also end up speaking about time in such a manner as pre-covid and post covid as many things won’t be the same, in particular attitudes towards working from home, wanting more space etc.
Maybe we can find a more eloquent way to express it (pre 2020) or “through 19”.
Still thinking Covid will linger in odd pockets so not sure we will have a clean post-covid. Personally would like to find a reference without the virus.