According to that wiki? Yeah I was confused, I've noticed things were odd there, but I think they made a mistake themselves:
These countdowns are based on the date put above: 28th Oct 4AM (gmt+8)
And below you have the same date but before midnight, so the other date is 20 entire hours later than the one in countdown!
See, it's so confusing even wiki can't keep up with it
Official Genshin site:
According to this, I've put the following in my code: 2023-10-28T23:59:00+08:00
28 oct 23:59 (utc+8) in my timezone will be 28 oct 17:59 (utc+2), so counting from now (25 oct ~15:00) it will be in 3 days and 3 hours and my countdown shows the accurate time for me.
So I don't know, I think the wiki is wrong, given they put two different dates on the same page of theirs lol.