"Tue, 21 Jan 2025 21:55:23"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250121
Only TIME
21:55:23
General datetime
2025-01-21 21:55:23Z
For Database
2025-01-21 21:55:23
For HTTP1.1
Tue, 21 Jan 2025 21:55:23 GMT