2.1.0 :002 > Time.at(1432927800000/1000).to_s(:db)
=> "2015-05-29 22:30:00"
# Instead of strftime will be better to use predefined :db pattern from ActiveSupport:
## Timestapms without leading zeros won't require the division by a thousand.
## If you do that you'll get 1970 as the date
## So instaed just run this
Time.at(1652276037)
=> "2022-05-11 13:33:57 +0000"
## From there just format as you wish to using :db or strftime