"Fri, 20 Jun 2025 14:45:16"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250620
Only TIME
14:45:16
General datetime
2025-06-20 14:45:16Z
For Database
2025-06-20 14:45:16
For HTTP1.1
Fri, 20 Jun 2025 14:45:16 GMT