"Fri, 21 Jun 2024 18:54:15"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240621
Only TIME
18:54:15
General datetime
2024-06-21 18:54:15Z
For Database
2024-06-21 18:54:15
For HTTP1.1
Fri, 21 Jun 2024 18:54:15 GMT