If there’s a break in the clouds tonight, go outside and look up: That big, bright, full moon doesn’t appear for Christmas very often. For the first time since 1977, we’ve got a Yuletide Moon. Only every 38 years does this happen – a full moon falling on Christmas. This year’s moon will be high in the sky overhead, and if the clouds give it any room to shine, it’s expected to provide an extra luminous glow.