"Mon, 26 May 2025 14:45:13"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250526
Only TIME
14:45:13
General datetime
2025-05-26 14:45:13Z
For Database
2025-05-26 14:45:13
For HTTP1.1
Mon, 26 May 2025 14:45:13 GMT