"Sun, 29 Dec 2024 21:18:18"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241229
Only TIME
21:18:18
General datetime
2024-12-29 21:18:18Z
For Database
2024-12-29 21:18:18
For HTTP1.1
Sun, 29 Dec 2024 21:18:18 GMT