Not Just the Student's Dream
Snow Day is similar to but not quite the same as getting a day off school because it's a "snow day".
Snow Day is simply a day to celebrate and appreciate the snow. If it happens to precipitate snow today, so much the better.
For those who live in a climate without snow, I'm sorry. You don't know what you're missing. You probably should move north in the northern hemisphere or south in the southern hemisphere so you can experience a winter with snow.
In some areas moving up to a higher elevation will suffice.
Think of all the fun you can have with snow. Snowmen, snowballs and the requisite fights, snow angels, sledding, skiing (so they say), and more.
Forget about the shoveling, snowblowers (or snowthrowers, if you prefer), tire chains, etc. That's not important today.
When Bing Crosby first sang I'm Dreaming of a White Christmas, I wonder what folks in the southern US thought.