On R. Dosa's statement that the person who davens on behalf of the congregation should pray conditionally, depending on the true date. The sages had gathered and were deliberating whether to mention Rosh Chodesh in the Rosh Hashanah liturgy. They disagree, of course, but the dispute us over the conditional factor, not the Rosh Chodesh factor (R. Dosa always favored the conditional approach!). Plus: An investigation into Shehechyanu, which can be an especially poignant blessing at the time of the holidays. The time of saying it may be less precise than any one moment. And the observation that the pilgrimage festivals are different from Rosh Hashanah and Yom Kippur.