"Sat, 18 Jan 2025 23:47:38"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250118
Only TIME
23:47:38
General datetime
2025-01-18 23:47:38Z
For Database
2025-01-18 23:47:38
For HTTP1.1
Sat, 18 Jan 2025 23:47:38 GMT