All lunar eclipses occur at full moon and everyone on nightside of Earth is able to observe lunar eclipses.
(All lunar eclipses; occur; L:at full moon) (everyone on nightside of Earth; is; able to observe lunar eclipses) (everyone on nightside of Earth; to observe; lunar eclipses)
All lunar eclipses everyone on nightside of Earth everyone on nightside of Earth
occur is to observe
L:at full moon
able to observe lunar eclipses
lunar eclipses