I got a online challenge as below:

Given a time in -hour AM/PM format, convert it to military (24-hour) time.
Note: – 12:00:00AM on a 12-hour clock is 00:00:00 on a 24-hour clock. 
- 12:00:00PM on a 12-hour clock is 12:00:00 on a 24-hour clock.

Example

• 
Input ’12:01:00′.
• 
Return ’00:01:00′.

here is my solution:

function timeConversion(s) {
  const validtime = s.replace(/.{2}$/, ' ' +s.substring(s.length-2));
  const newDate = new Date(`02/06/2024 ${validtime }`);
  return newDate.toLocaleTimeString('en-US', { hour12: false });
}

const result = timeConversion('12:30:59AM');
console.log("result", result);

But when I post this answer some of the conversion is failing. I am looking a help as that, what have I missed to consider here or what will be the issue with my solution?