"Sun, 12 Jan 2025 14:54:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250112
Only TIME
14:54:21
General datetime
2025-01-12 14:54:21Z
For Database
2025-01-12 14:54:21
For HTTP1.1
Sun, 12 Jan 2025 14:54:21 GMT