Weight @ the Equator vs. the N/S Poles (how much)

[NORTY FLATZ]

Ok, so I got to thinkin'.

If a person weighed 150 lbs on the Equator, how much would they weigh at either Pole?

Would one Pole be different than the other?

If so, which?

Would it matter what time of year? Or Season?

Just thinking of centrifugal effect on mass, here.

Anyone got a formula for something like this?

Also, would we weigh more/less or the same, with respect to Sun/moon positioning?

What about altitude?

Yeah, it's a slow day, here. Sorry.