"Sun, 12 Jan 2025 21:55:56"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250112
Only TIME
21:55:56
General datetime
2025-01-12 21:55:56Z
For Database
2025-01-12 21:55:56
For HTTP1.1
Sun, 12 Jan 2025 21:55:56 GMT