This past Sunday, members of the Bay Area Muslim community gathered on local hilltops, from Mt Tamalpais in Marin, to Cal State East Bay, to the hills of UC Berkeley. What were they doing? Looking up to the sky for the new crescent moon that signifies the end of the fasting month of Ramadan, when Muslims abstain from food and drink from sunup to sundown. Islamic tradition says to end the fast once the new moon is seen, but some Muslims have recently been using a different method to calculate the end of Ramadan. Not everyone agrees.