[OptionOfT]

You don't. It's ambiguous. Just like the string 01/03/2025 is if you don't know the source's locale.

But it can be worse. Los Angeles, Sunday, November 2, 2025, 2:00:00 am is ambiguous. Is it PST or PDT?

[withinboredom]

That's not an ambiguous date because Nov 2 2025 is PST, not PDT.