"Sat, 31 May 2025 14:45:10"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250531
Only TIME
14:45:10
General datetime
2025-05-31 14:45:10Z
For Database
2025-05-31 14:45:10
For HTTP1.1
Sat, 31 May 2025 14:45:10 GMT