"Sat, 15 Feb 2025 19:25:46"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250215
Only TIME
19:25:46
General datetime
2025-02-15 19:25:46Z
For Database
2025-02-15 19:25:46
For HTTP1.1
Sat, 15 Feb 2025 19:25:46 GMT