"Sat, 11 Jan 2025 18:00:00"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250111
Only TIME
18:00:00
General datetime
2025-01-11 18:00:00Z
For Database
2025-01-11 18:00:00
For HTTP1.1
Sat, 11 Jan 2025 18:00:00 GMT