Depending on how dark the sky is, people across the globe will be able to view an exceptional celestial get together graced by a trio of planets on Monday night. Saturn, Mercury and Venus, naked-eye visible planets, will come close to each other on June 27. Just after sunset, in the west-north-west direction, these three planets can be viewed - weather permitting -- very close to each other, says P. Iyamperumal, Executive Director of the B. M. Birla Planetarium.