Each region's servers reach that local time at a different moment, so the same deadline is three different instants.
This page tracks when the current Genshin Impact character event wish (banner) ends. Data is sourced from official HoYoverse/HoYoLAB announcements, so you know exactly how much time you have left to pull for featured characters.
Genshin Impact uses a gacha system where limited-time character and weapon banners rotate every few weeks. Each banner features specific 5-star and 4-star characters that may not return for months. Knowing when a banner ends is critical for players deciding whether to spend their Primogems now or save for an upcoming character they want more.
The exact end date is shown in the countdown above. Each version typically has two banner phases, each lasting about 3 weeks.
Pity carries over between banners of the same type (character event wish). If you're at 70 pulls on one character banner, you'll still be at 70 when the next character banner starts.
HoYoverse typically announces upcoming banners through the official Genshin Impact social media channels and in-game notices a few days before the current banner ends.