date

• Usually combined with scripts

# Show current date
date

Input date

date -d '2023-12-31T12:00:00.000Z'
date -u -d '2023-12-31T12:00:00.000Z' # Output as UTC

Format date

# json with minutes and hours
date +'{"hour":"%H","min":"%M"}'

# unix epoch
date +'%s'

Set system date

date -s "12 Mar 2018 13:20:00"