Islam vs Judaism

Major Islamic holidays follow the lunar Hijri calendar, so their dates shift approximately 11 days earlier each year relative to the Gregorian calendar: [2][3]

Eid al-Fitr: A joyous celebration marking the end of Ramadan, featuring communal prayers, feasting, charity, and family gatherings. Eid al-Adha: The "Festival of Sacrifice," commemorating Abraham's willingness to sacrifice his son. It coincides with the Hajj pilgrimage and involves the ritual sacrifice of an animal, with meat distributed to family, friends, and those in need. Ramadan: The ninth month of the Islamic calendar, during which Muslims fast from dawn to sunset. It commemorates the month in which the Quran was first revealed. Laylat al-Qadr (Night of Power): Observed during the last ten nights of Ramadan, believed to be the night the first Quranic revelation was received. Mawlid an-Nabi: The birthday of the Prophet Muhammad, celebrated in many Muslim communities with prayers, recitations, and gatherings, though some Muslims consider this observance an innovation. Ashura: The 10th of Muharram, observed as a day of fasting by many Sunni Muslims and as a day of mourning by Shia Muslims commemorating the martyrdom of Husayn at Karbala. Islamic New Year (1 Muharram): Marks the beginning of the Islamic lunar calendar year. [2][3]

The Jewish calendar is lunisolar, with holidays beginning at sunset: [2][3]

Shabbat (weekly): The Sabbath, observed every Friday evening to Saturday evening, is the most frequent Jewish observance. Rosh Hashanah (September-October): The Jewish New Year, beginning a ten-day period of repentance. Marked by the blowing of the shofar (ram's horn). Yom Kippur (September-October): The Day of Atonement, the holiest day in the Jewish calendar. A 25-hour fast devoted to prayer, repentance, and reconciliation. Sukkot (September-October): The Festival of Booths, commemorating the Israelites' wandering in the wilderness. Families build and eat in temporary shelters (sukkot). Hanukkah (November-December): The Festival of Lights, commemorating the rededication of the Second Temple. Celebrated by lighting the menorah over eight nights. Purim (February-March): Celebrates the deliverance of the Jewish people as told in the Book of Esther. Marked by reading the Megillah, costumes, and festive meals. Passover/Pesach (March-April): Commemorates the Exodus from Egypt. The Seder meal, with its structured readings from the Haggadah, is the central ritual. Shavuot (May-June): Celebrates the giving of the Torah at Sinai. Marked by all-night study sessions and dairy foods. Tisha B'Av (July-August): A day of mourning commemorating the destruction of both Temples and other tragedies in Jewish history. [2][3]