"Sun, 01 Jun 2025 14:45:08"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250601
Only TIME
14:45:08
General datetime
2025-06-01 14:45:08Z
For Database
2025-06-01 14:45:08
For HTTP1.1
Sun, 01 Jun 2025 14:45:08 GMT