toLocaleString gives wrong 12 hour time

I am writing a simple JS app which requires time to be displayed in 12-hour format. For this, I'm using the toLocaleString of the Date class. But unfortunately, it returns the time at 12:05 to be 00:05 pm and 00:05 to be 00:05 am where I want it to show 12:05 pm and 12:05 am respectively.

Here is the way I use the function:

console.log(new Date("2020-08-15 12:15").toLocaleString("en-GB", { dateStyle: "medium", timeStyle: "short", hour12: true}));

console.log(new Date("2020-08-15 00:15").toLocaleString("en-GB", { dateStyle: "medium", timeStyle: "short", hour12: true}))

Is there a workaround or any other function to properly display the time at 12 o'clock?

Problem occurs only at 12 o'clock and something past 12