It's the Day of Zeus / Jupiter's Day / Thorsday!
"The surname Homagyrios (the Assembler) was given to #Zeus because in this place Agamemnon assembled the most eminent men in Greece, in order that they might consult together how to make war on the empire of Priamos [of Troy]."
Pausanias, Description of Greece 7.24.2
#Jupiter, Roman bronze figure from Paramythia, 100-199 CE