The feasts of the Israelites were the Sabbath; the first day of each month, called in our translations calends, or new-moon; the three great feasts of the passover, pentecost, and tabernacles, instituted in memory of the three greatest blessings they received from God, …

Yeats understood these ancient mysteries better than any modern.

checking a Calling Identity Display device,

gliding shifts; gliding hours; gliding time