Traditionally Astronomy Day takes place in the spring, sometime between mid-April and mid-May, to coincide with the first quarter moon around a Saturday in that time period. The springtime 2023 Astronomy Day will take place on April 29. Since 2007, a day to celebrate Astronomy also takes place in the fall, with the date falling on a Saturday close to the first quarter moon between mid-September and mid-October.
If you're a dog lover, consider celebrating this day that is meant to encourage people to gaze at the stars and explore the wonders of the cosmos with a t-shirt featuring your pooch as an astronaut! Here are a few different ideas to get you started. You've got a few weeks to pick up one of these shirts for your Astronomy Day celebrations.