1. The first day of Rosh Hashanah. For those non-Jewish residents wondering why the congregation of Beth El Temple Center is walking to Clay Pit Pond this afternoon, it's the tashlikh, the symbolically cast into the water of one's sins into a body of water. Those without a place to celebrate can join Chabad of Arlingon-Belmont at the Regent Theater in Arlington Center, 9 Medford St. The service – you don't need a ticket – begins at 9:30 a.m. with the Shofar blowing at noon. There will be a Kiddush/buffet at 1 p.m.
2. Talking about bodies of water, the community will likely receive some solid information on the future of a proposed new community pool as the Underwood Pool Building Committee meets in Town Hall's conference room 1 at 7 p.m.
3. Bring your cameras and tissues: it's the first day of school for half of the district kindergarteners and then it's only for half a day. The remaining half will start tomorrow.
4. One of the great volunteer groups in Belmont, Parents of Music Students – better known as POMS – will be holding its first meeting of the new school year at 7 p.m. in the conference room of Belmont High School. If your child is in the music program, please consider joining.
5. On this day in 1972, Palestinian terrorists attacked the Israeli Olympic team at the summer games in Munich; 11 Israeli athletes and coaches, five terrorists and a police officer were killed.