"Sat, 18 Jan 2025 08:21:50"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250118
Only TIME
08:21:50
General datetime
2025-01-18 08:21:50Z
For Database
2025-01-18 08:21:50
For HTTP1.1
Sat, 18 Jan 2025 08:21:50 GMT