"Sat, 15 Jun 2024 08:55:03"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240615
Only TIME
08:55:03
General datetime
2024-06-15 08:55:03Z
For Database
2024-06-15 08:55:03
For HTTP1.1
Sat, 15 Jun 2024 08:55:03 GMT