Rare ‘Christmas star’ will happen when Jupiter and Saturn align for winter solstice. Here’s how to spot it

Skywatchers looking to the stars above on Monday, Dec. 21 are in for a special treat – and no, it’s not an early peek at Santa’s sleigh. A planetary conjunction between Saturn and Jupiter is set to take place on the winter solstice, and its proximity to the holidays has earned it the nickname “Christmas Star.”