Anyone else notice the moon phase complication is a bit off? Like yesterday it said the moon was waning, and every other website said it was a new moon. If I use the time machine, the waxing crescent is a few days late, and first quarter is a day later than it should be. What’s the deal? Is it fixable.
I don’t know how the complication determines the phase of the moon but I assume it is a simple model that is based on a circular lunar orbit with fixed and equal periods between each phase. Given that the Moon’s orbit is actually quite complex, a simple model, whilst ok on average, will only be roughly correct for any particular date/phase.
A more accurate estimation formula ( albeit one you have to apply to your own image(s) ) can be found here:
I hope that helps.