"Sun, 06 Jul 2025 14:45:03"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250706
Only TIME
14:45:03
General datetime
2025-07-06 14:45:03Z
For Database
2025-07-06 14:45:03
For HTTP1.1
Sun, 06 Jul 2025 14:45:03 GMT