+216+. Elaborate solstitial ceremonies are practiced by the North American Pueblos.[408] A well-developed solar system of festivals existed in Peru, where the sun was the central object of worship; equinoxes and solstices were observed with great ceremonies, and especially at the summer solstice the rising of the sun was hailed with popular rejoicing as a sign that the favor of the deity would be extended to the nation.[409] Similar ceremonies may have existed in Mexico and elsewhere, but in general, as is remarked above, the astronomical feature at solar epochs yielded to other associations. Occasional festivals occur in connection with the worship of stars (especially the morning star);[410] the Pleiades are objects of observation among some low tribes, and in some cases (Society Islands, Tahiti, Hawaii, New Zealand) the year began with the rising of these stars, but apparently no festivals are dedicated to them.[411] In the later theistic development various deities are brought into connection with heavenly bodies, and their cults absorb earlier observances.[412] +217+. Socially the agricultural festivals are the most important of the early festival ceremonies;[413] they unite the people in public observances, thus furthering the communal life, and they satisfy the popular demand for amusement. Doubtless under any social conditions gatherings for merrymaking would have arisen, but, by reason of the constitution of early society, they necessarily assume a religious character. Whether for planting or for reaping, the local god must be considered; it is he whose aid must be invoked for coming crops, and he must be thanked for successful seasons. The festivals occur at various times in the year among various peoples, but the tone of merriment is the predominant one--it is only in a few cases that a touch of seriousness or sadness is found. Early festal calendars are largely agricultural. In Greece, Rome, and Peru there was a succession of festivals, connected with planting and reaping, running substantially through the year; other ceremonies, of course, stood side by side with them, but these were relatively few. +218+. Joyous festivals occur especially at the time of the ripening of crops and harvest. The old Canaanite autumn feasts, adopted by the Hebrews, were seasons of good cheer.[414] In Greece the Panathenæa fell in July-August, the Thesmophoria in October, and the Anthesteria in February,--all agricultural, with joyous features;[415] of the similar Roman festivals the Feriæ Latinæ fell in April, the Feriæ Jovi in August, the Saturnalia in December, and with these should perhaps be included the Ambarvalia (in May) and the festival of the horse sacrifice (in October).[416] Other ceremonies of this nature occur in India, New Zealand, Torres Straits islands, and in the old Peruvian cult.