Birthday Disco is a free, full-screen birthday countdown timer with no sign-up — enter a name and a birthday and watch a calm starlit night slowly ramp into a full disco as the day approaches. The countdown runs in your own time zone, right down to an exact hour and minute if you want one. When the clock hits zero, the screen explodes with fireworks, confetti, and a giant “Happy Birthday!” — big enough for the living-room TV, fun for kids, and smooth on a phone.
Warming up the disco ball…