"Fri, 21 Jun 2024 16:17:39"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240621
Only TIME
16:17:39
General datetime
2024-06-21 16:17:39Z
For Database
2024-06-21 16:17:39
For HTTP1.1
Fri, 21 Jun 2024 16:17:39 GMT