I tools i love, today "date":
date --rfc-email --date="aug 15 10am" # Mon, 15 Aug 2022 10:00:00 +0200 date --rfc-email --date="+2 weeks" # Fri, 12 Aug 2022 16:17:48 +0200 date --rfc-email --date="next monday 1600" # Mon, 01 Aug 2022 16:00:00 +0200 # convert the current day of the month + one month at 9pm local time to est TZ="EST" date --rfc-email --date="next month 2100 Z+0200" # Mon, 29 Aug 2022 14:00:00 -0500
I use this almost daily 😄