Tashlich - Performed In London Jews Cast Their Sins On The Waters -- Pilgrims from London Synagogues, casting their sins on the waters of the Thames, during the ceremony at sunset in the shadow of Tower Bridge - marking the end of the Jewish new year celebrations today, September 29. Nearly five thousand Jews assembled on the Thames bank near Tower Bridge at sunset today, September 29, to perform Tashlich - the ceremony of casting their sins on the waters, which was observed in connection with