Trimestus
From Tootsville Wiki-Wiki
Tootanga has three moons. Every so often, all three moons align in the sky, and the Toots (elephants) have a huge party called Trimestus.
The next Trimestus will be on Lightningday, the fifteenth of Senecalensis, 151. On Earth, that will begin on the evening of 9 May, 2019, and end in the afternoon of 10 May, 2019 (in UCT time zone).
The moons are named The Moon, The Other Moon, and The Pink Moon.