Day One
The first day of Sunset.The Sunset is a time of Thanksgiving and Remembrance. Those who have passed are remembered, and the blessings of the year are counted and acknowledged.
This day is reserved for celebration of the Great Olympian Gods, or the Great Gods of the local pantheon, and is done in the tradition of giving thanks, something a kin to New Years Eve and Thanksgiving Day, in which remembering the blessings of the year is in order.
The Gods are honored with sports, dance, celebrations of feasting. The Gods are celebrated with celestial rites, those dedicated to the gods of the sky. Burnt offerings and contests of poetry writing, etc.
For the sake of clarity, I consider the Great Olympian Gods to be Zeus, Hera, Apollo, Artemis, Hephaestos, Athena, Ares, Aphrodite, Poseidon, Demeter, Hermes, and Hestia. Traditionally, honors done to the Gods are begun with invocations of Hestia, the virgin goddess of the hearth, and end with invocations and sacrifices to her as well.
The Olympian Gods are honored in many different ways, but traditionally they are "celestial" or "Ouranic" in nature and thus the offerings are burned so that they rise up to them. Incense, candles, burnt offerings of food, cakes, etc. are all appropriate.