"Fri, 21 Jun 2024 13:40:23"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240621
Only TIME
13:40:23
General datetime
2024-06-21 13:40:23Z
For Database
2024-06-21 13:40:23
For HTTP1.1
Fri, 21 Jun 2024 13:40:23 GMT