"Fri, 21 Jun 2024 15:54:39"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240621
Only TIME
15:54:39
General datetime
2024-06-21 15:54:39Z
For Database
2024-06-21 15:54:39
For HTTP1.1
Fri, 21 Jun 2024 15:54:39 GMT