Moons

Aegis is a world with two moons:  Argelis and  Legunda. Argelis is an incredibly large moon, which is about a sixteenth the mass of the world. Legunda is about half the size, and rotates about 90 degrees from Argelis. The two wax and wane on different schedules, and but only synch four times per year: at each equinox and each solstice, and only eclipse every 1000 years, next scheduled in 567 TA  due to Legunda's wandering orbit.