"Fri, 21 Jun 2024 16:35:40"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240621
Only TIME
16:35:40
General datetime
2024-06-21 16:35:40Z
For Database
2024-06-21 16:35:40
For HTTP1.1
Fri, 21 Jun 2024 16:35:40 GMT