"Fri, 15 Mar 2024 20:15:40"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240315
Only TIME
20:15:40
General datetime
2024-03-15 20:15:40Z
For Database
2024-03-15 20:15:40
For HTTP1.1
Fri, 15 Mar 2024 20:15:40 GMT