"Fri, 21 Jun 2024 21:25:37"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240621
Only TIME
21:25:37
General datetime
2024-06-21 21:25:37Z
For Database
2024-06-21 21:25:37
For HTTP1.1
Fri, 21 Jun 2024 21:25:37 GMT