"Sat, 15 Feb 2025 21:11:03"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250215
Only TIME
21:11:03
General datetime
2025-02-15 21:11:03Z
For Database
2025-02-15 21:11:03
For HTTP1.1
Sat, 15 Feb 2025 21:11:03 GMT