whenis is a command-line utility that converts timestamps between UTC and local timezones.
pip install whenis
$ whenis -h usage: whenis [-h] [-f TIMEZONE] [-t TIMEZONE] [timestamp [timestamp ...]] Convert timestamps between UTC and local timezones. positional arguments: timestamp timestamp to be converted optional arguments: -h, --help show this help message and exit -f TIMEZONE, --from TIMEZONE timezone to convert from (default: utc) -t TIMEZONE, --to TIMEZONE timezone to convert to (default: local) $ whenis -f utc -t local "12/7/16 1:28:36.156 AM" Tue 6 Dec 2016, 5:28:36 PM -08:00 $ whenis 2016-12-07 01:28:36,156 Tue 6 Dec 2016, 5:28:36 PM -08:00 $ whenis -f local -t utc 6 Dec 2016, 5:28:36 PM Wed 7 Dec 2016, 1:28:36 AM +00:00