"Thu, 21 Mar 2024 20:15:04"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240321
Only TIME
20:15:04
General datetime
2024-03-21 20:15:04Z
For Database
2024-03-21 20:15:04
For HTTP1.1
Thu, 21 Mar 2024 20:15:04 GMT