"Sat, 18 Jan 2025 15:27:56"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250118
Only TIME
15:27:56
General datetime
2025-01-18 15:27:56Z
For Database
2025-01-18 15:27:56
For HTTP1.1
Sat, 18 Jan 2025 15:27:56 GMT