"Fri, 21 Jun 2024 20:15:01"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240621
Only TIME
20:15:01
General datetime
2024-06-21 20:15:01Z
For Database
2024-06-21 20:15:01
For HTTP1.1
Fri, 21 Jun 2024 20:15:01 GMT