1. At what places on Earth is Polaris seen on the horizon? 2. Where do you have to be on the Earth to see the Sun at your zenith? If you stay at one such location for a full year, on how many days...

1. At what places on Earth is Polaris seen on the horizon?

2. Where do you have to be on the Earth to see the Sun at your zenith? If you stay at one such location for a full year, on how many days will the Sun pass through the zenith?

3. Where on the horizon does the Sun rise at the time of the vernal equinox?