Lunar Orbit Question

[NeilW]

Hi,

I know that perigee happens in the Moon's orbit once per orbit, but how often does perigee occur at the same time as a full moon?

Thanks,

[goober]

Perigee occurs every 27 days, and a full moon every 29 days ... plus a few hours to both those. Someone else can do the mathematics :)

[NeilW]

Thanks. I have established from other sources that it's once every 411.7 days, or about once every 14 months.