"Sat, 11 Jan 2025 15:15:16"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250111
Only TIME
15:15:16
General datetime
2025-01-11 15:15:16Z
For Database
2025-01-11 15:15:16
For HTTP1.1
Sat, 11 Jan 2025 15:15:16 GMT