"Sat, 18 Jan 2025 09:39:42"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250118
Only TIME
09:39:42
General datetime
2025-01-18 09:39:42Z
For Database
2025-01-18 09:39:42
For HTTP1.1
Sat, 18 Jan 2025 09:39:42 GMT