"Sat, 04 Jan 2025 06:48:15"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250104
Only TIME
06:48:15
General datetime
2025-01-04 06:48:15Z
For Database
2025-01-04 06:48:15
For HTTP1.1
Sat, 04 Jan 2025 06:48:15 GMT