"Sat, 15 Jun 2024 17:57:23"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240615
Only TIME
17:57:23
General datetime
2024-06-15 17:57:23Z
For Database
2024-06-15 17:57:23
For HTTP1.1
Sat, 15 Jun 2024 17:57:23 GMT