"Fri, 21 Jun 2024 18:42:38"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240621
Only TIME
18:42:38
General datetime
2024-06-21 18:42:38Z
For Database
2024-06-21 18:42:38
For HTTP1.1
Fri, 21 Jun 2024 18:42:38 GMT