End of year traditions of our fictives in their sources :)
Some had, in their worlds/timelines, celebrations just like our own christian standard, even if they were not religious: Gen, Lewis, and Destiny saw their surroundings decorated with christmas lights and cheered the arrival of the new year on January 1st just as they do here.
Ahsoka and Nokariith had their versions of New Year's Eve, though it wasn't the greatest celebration of the year, not even close - Republic Day and Empire Day, respectively, overshadowed it by far. Ahsoka also celebrated the Festival of Light, early year in Naboo, and All-Species Week in Coruscant
Naavlein, as a man and as Ascended, had his people's focus on the summer solstice, the start of rain season in the Shuriman north. Kai and Valmar, on the other side, celebrated the end of year in the height of Ionian winter with wreaths of ice lotuses and warm offerings for the Kanmei. Viktor, in equatorial Piltover, would take a break from his research work for the annual Academy graduation celebrations and fairs.
Pareiko, in his home planet, had very similar celebrations as we currently do; with the added detail that "christmas" and New Year's were the same thing, a two-week celebration of a new cycle and their empire's founder's birthday.
And last but not least, our host, Seth, observed a festival of giving, Tennobaum, with the great objective of uniting his fellow Tenno in charity for the poor, generosity towards their fellows, and gratitude wherever it goes. It's a new but proudly shared holiday, with good food and good friends throughout the Origin System.
