"Sat, 15 Feb 2025 18:29:11"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250215
Only TIME
18:29:11
General datetime
2025-02-15 18:29:11Z
For Database
2025-02-15 18:29:11
For HTTP1.1
Sat, 15 Feb 2025 18:29:11 GMT