"Sat, 18 Jan 2025 17:42:48"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250118
Only TIME
17:42:48
General datetime
2025-01-18 17:42:48Z
For Database
2025-01-18 17:42:48
For HTTP1.1
Sat, 18 Jan 2025 17:42:48 GMT