"Sat, 15 Feb 2025 18:28:36"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250215
Only TIME
18:28:36
General datetime
2025-02-15 18:28:36Z
For Database
2025-02-15 18:28:36
For HTTP1.1
Sat, 15 Feb 2025 18:28:36 GMT