Client/resources/app/files/assets/js/eastereggs.js

// You're kind of ruining the surprise by reading this, but whatever
var today = new Date();

// Check Christmas season: Date constructor in Javascript uses an index
// so 11 is Dec. of this year, and 12 is Jan. of the next
var christmasBegin = new Date(today.getFullYear(), 11, 23); 
var christmasEnd = new Date(today.getFullYear(), 12, 8);
var sf

if((today >= christmasBegin && today <= christmasEnd)) {
	console.log("Christmas Activated.");
	sf = new Snowflakes({zIndex: -100});
}

function stopEasterEggs(){
	if (sf != null) {
		sf.destroy();
	}	
}