"Sat, 18 Jan 2025 20:35:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250118
Only TIME
20:35:21
General datetime
2025-01-18 20:35:21Z
For Database
2025-01-18 20:35:21
For HTTP1.1
Sat, 18 Jan 2025 20:35:21 GMT