Demise of the Prophet (12 Rabi al-Awwal narration) Martyrdom / demise Strength of evidence: Weak Al-Kulayni in al-Kafi and most Sunni historians date the Prophet’s death to 12 Rabi al-Awwal 11 AH. Other viewsThe prevailing Shia view is 28 Safar. Sources الکافی، کلینیتاریخ الامم و الملوک (تاریخ طبری)ویکیشیعه: رحلت پیامبر(ص)
The Prophet arrives in Medina Religious occasion Strength of evidence: Medium After leaving Mecca the Prophet reached Quba, where Imam Ali joined him with the Fatimas, and then entered Medina. Masjid Quba, the first mosque of Islam, was built in those days. Other viewsArrival at Quba is given as 8 or 12 Rabi al-Awwal. Sources السیرة النبویة، ابن هشامویکیشیعه: هجرت به مدینه
Prophet’s birthday (Sunni view) and Unity Week Religious occasion Strength of evidence: Medium Sunni sources place the Prophet’s birth on 12 Rabi al-Awwal and Shia sources on the 17th; the days between are observed as Unity Week. Sources الکافی، کلینی، ج۱، کتاب الحجةویکیشیعه: هفته وحدت