The Hijri date below uses the Umm al-Qura convention, the same calendar Saudi Arabia uses for civil purposes. Local moon-sighting can shift a month's start by a day.
Hijri dates are calculated, not observed — different regions and different calculation conventions can disagree by a day around a month's start, especially for Ramadan and the two Eids. The dates above are calculated estimates; each event page explains this and will be updated once real moon-sighting announcements are made closer to the date.