"Fri, 21 Jun 2024 16:35:44"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240621
Only TIME
16:35:44
General datetime
2024-06-21 16:35:44Z
For Database
2024-06-21 16:35:44
For HTTP1.1
Fri, 21 Jun 2024 16:35:44 GMT