"Sat, 18 Jan 2025 18:44:06"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250118
Only TIME
18:44:06
General datetime
2025-01-18 18:44:06Z
For Database
2025-01-18 18:44:06
For HTTP1.1
Sat, 18 Jan 2025 18:44:06 GMT