"Fri, 21 Jun 2024 16:39:42"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240621
Only TIME
16:39:42
General datetime
2024-06-21 16:39:42Z
For Database
2024-06-21 16:39:42
For HTTP1.1
Fri, 21 Jun 2024 16:39:42 GMT