"Mon, 14 Jul 2025 14:45:23"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250714
Only TIME
14:45:23
General datetime
2025-07-14 14:45:23Z
For Database
2025-07-14 14:45:23
For HTTP1.1
Mon, 14 Jul 2025 14:45:23 GMT