The Islamic year is starts when the prophet Muhammad migrates along with his follower from Mecca to Medina. This year has 354 days because Islamic year is about 11 days shorter than the solar year, Islamic years are also called Hijra years denoted as AH (anno Hegirae).. The name of Islamic months are as follows. 1. MUHARRAM. 2. SAFAR. 3. RABI-AL-AWWAL. 4. RABI-AL-SANI. 5. JUMATA-AL-AWWAL. 6. JUMATA-AL-AWAL. 7. RAJAB. 8. SHAABAN. 9. RAMADAN. 10. SHAWWAL. 11. ZEE-KAAD 12. ZIL-HAJJ. Islamic holy days are celebrated on fixed dates of the Islamic calendar like, On12 Rabi-al-awal is the date of birth of Prophet Muhammad. On every 1st of Ramadan Muslim start fasting till 1st Shawal and on that day they celebrate Eid. On 10 Zil-Hajj Muslim pilgrims. All these events related to the sign of moon on every month.