"Mon, 09 Jun 2025 14:45:12"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250609
Only TIME
14:45:12
General datetime
2025-06-09 14:45:12Z
For Database
2025-06-09 14:45:12
For HTTP1.1
Mon, 09 Jun 2025 14:45:12 GMT