"Sat, 15 Jun 2024 22:39:16"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240615
Only TIME
22:39:16
General datetime
2024-06-15 22:39:16Z
For Database
2024-06-15 22:39:16
For HTTP1.1
Sat, 15 Jun 2024 22:39:16 GMT