"Fri, 21 Jun 2024 05:15:02"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240621
Only TIME
05:15:02
General datetime
2024-06-21 05:15:02Z
For Database
2024-06-21 05:15:02
For HTTP1.1
Fri, 21 Jun 2024 05:15:02 GMT