More than 100 students, family members and friends showed up Friday evening at the University of Southern Maine Multicultural Student Center for a reception celebrating the end of Ramadan. They bought copies of a new children’s book, “Moon Watchers,” which describes a Muslim family’s observation of Ramadan, signed by author and refugee activist Reza Jalali of Falmouth. They ate food from A Passage to India, a Portland restaurant owned by the family of student Rizwan Khan. The U.S. Postal Service exhibited its latest version of its stamp commemorating Eid al-Fitr, the three-day holiday marking the end of Ramadan, and other stamps. Children were treated to traditional hand painting. The reception took place a week late – Ramadan ended last week – because many people were tied up at family celebrations, Jalali said.