"Sat, 18 Jan 2025 05:40:20"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250118
Only TIME
05:40:20
General datetime
2025-01-18 05:40:20Z
For Database
2025-01-18 05:40:20
For HTTP1.1
Sat, 18 Jan 2025 05:40:20 GMT