"Tue, 21 Jan 2025 21:11:12"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250121
Only TIME
21:11:12
General datetime
2025-01-21 21:11:12Z
For Database
2025-01-21 21:11:12
For HTTP1.1
Tue, 21 Jan 2025 21:11:12 GMT