"Sat, 15 Jun 2024 16:16:31"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240615
Only TIME
16:16:31
General datetime
2024-06-15 16:16:31Z
For Database
2024-06-15 16:16:31
For HTTP1.1
Sat, 15 Jun 2024 16:16:31 GMT