"Sun, 12 Jan 2025 13:15:13"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250112
Only TIME
13:15:13
General datetime
2025-01-12 13:15:13Z
For Database
2025-01-12 13:15:13
For HTTP1.1
Sun, 12 Jan 2025 13:15:13 GMT