The Prometheia - although there was a small festival in Athens by that name, date unknown, this is a more MODERN Festival.
http://penelope.uchicago.edu/Thayer/E/Roman/Texts/secondary/SMIGRA*/Prometheia.html This was one of 5 torch race celebrations that took place in and around Athens.

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I take the time to give thanks to Prometheus in His role as Friend to Man and to Helios who is at the Zenith of His strength for the year.

The celebration is about thanking Prometheus for His gift of fire to man (and Helios' role in that)* and Prometheus' gift of how sacrifices are portioned out** between man and the Gods. I celebrate it as a "fun" festival. Time to feast out in the sunshine.

In the morning, I start the first fire using Helios' rays (directing them with a magnifying glass onto dried fennel fluff)and use that to light a lamp - from which all other fires and candles will be lit. At that time a libation will be poured to Helios, thanking Him for His role in giving humans the gift of fire.*

Since I have to work tomorrow, I'll light candles around my office. I have a small hurricane candle holder that I can use to transport a small tea light to work to light the other candles.

In the evening (when I get home) Libations to Prometheus, Athena (pottery), and Hephaestus(the forge)are poured. I make a formal sacrifice to all the Gods, giving them the fat, bones, and gristle and we have the rest - but I save the liver for Prometheus***. There is plenty of food this time of year so put it on a stick and grill it over a fire. I even grill the fruit and note how it is sweeter. Fennel is also something to be sure to grill**** - and it is perfect at this time of year (at least it is here)

At dusk I'll get the bonfire and torches in my garden going. Then the husband and I will toast marshmallows and sip on some honey-wine.


SOURCES
Hesiod Theogony lines 507-616 and Aeschylus Prometheus Bound
* On His arrival in Olympus, Prometheus lighted a torch at the fiery chariot of the Sun which presently broke from it a fragment of glowing charcoal, which he thrust into the pithy hollow of a giant fennel-stalk. Then, extinguishing his torch, he stole away, and gave fire to mankind.

** At Sicyon, a sacrificial meal marking the "settling of accounts" between mortals and immortals, Prometheus played a trick against Zeus. He placed two sacrificial offerings before the Olympian: a selection of bull meat hidden inside an ox's stomach (nourishment hidden inside a displeasing exterior), and the bull's bones wrapped completely in "glistening fat" (something inedible hidden inside a pleasing exterior). Zeus chose the latter, setting a precedent for future sacrifices; henceforth, humans would keep the meat for themselves and burn the bones wrapped in fat as an offering to the gods.

*** Prometheus, in eternal punishment, is chained to a rock in the Caucasus, where his liver is eaten daily by an eagle, only to be regenerated, due to his immortality, by night . Years later the Greek hero Heracles would shoot the eagle and free Prometheus from his chains.

**** On His arrival in Olympus, Prometheus lighted a torch at the fiery chariot of the Sun which presently broke from it a fragment of glowing charcoal, which he thrust into the pithy hollow of a giant fennel-stalk. Then, extinguishing his torch, he stole away, and gave fire to mankind.