Islamic Calendar
The Islamic (Hijri) date in Japan today is .... The Hijri date in Japan is based on the local moon sighting determined by the country's moon sighting committees.
Muslims in Japan use the Hijri calendar to determine the dates of Islamic acts of worship and events such as Ramadan, Eid al-Fitr, Eid al-Adha, Day of Arafah, and Mawlid al-Nabi (Prophet's Birthday). The Hijri calendar is a lunar calendar consisting of 12 months in a year of 354 or 355 days.
The Hijri date in Japan may differ from the Umm al-Qura calendar (used in Saudi Arabia) due to differences in moon sighting. Currently, the Hijri date in Japan differs by 1 day from the Umm al-Qura calendar.