"Sat, 18 Jan 2025 18:58:51"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250118
Only TIME
18:58:51
General datetime
2025-01-18 18:58:51Z
For Database
2025-01-18 18:58:51
For HTTP1.1
Sat, 18 Jan 2025 18:58:51 GMT