Talk at the Jewish Calendar Seminar on Wednesday, 19 Adar II (March 30), 4-5 pm Speaker: Prof. Nachum Dershowitz (Tel-Aviv University) Title: "Indian Lunisolar Calendars" Abstract -------- In India, numerous lunisolar calendars are in use, and others have been used historically. These fall into three categories: arithmetic (like the Hebrew calendar); calculated (based on medieval astronomy); and astronomical (like the modern Chinese calendar). I will discuss these calendars, their calculation, and their accuracy.