Eid ul-Fitr (Arabic: عيد الفطر, Persian: عید فطر), often abbreviated as simply Eid, sometimes spelled Eid al-Fitr, is an Islamic holiday that marks the end of Ramadan, the month of fasting. At this time people often send cards to each other wishing happy Eid. The moon phases are essential to this holiday as they signify the beginning and the end of Ramadan. This card for Haier electronics company while opening demonstrates the phases of the moon.