"Mon, 06 Jan 2025 21:36:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250106
Only TIME
21:36:21
General datetime
2025-01-06 21:36:21Z
For Database
2025-01-06 21:36:21
For HTTP1.1
Mon, 06 Jan 2025 21:36:21 GMT