There’s a reason advent calendars have survived for over a century: counting down to a holiday makes it feel more real. Every day you check off is a small burst of anticipation — the holiday gets closer, the excitement builds, and by the time the day finally arrives, you feel like you’ve earned it. A digital countdown display takes that same principle and amplifies it. Instead of a cardboard door hiding a chocolate, you get a living, ticking reminder on the biggest screen in your room, visible all day, impossible to ignore. We think every home, classroom, and office should have one during the holidays. Here’s exactly how to set it up.
Psychologists have a name for the pleasure we get from looking forward to something: anticipatory savoring. Research consistently shows that the anticipation of a positive event can generate as much happiness as the event itself — sometimes more. A visible countdown display taps directly into this mechanism. Every time someone walks past the screen and sees “12 days, 6 hours, 34 minutes,” they get a small jolt of excitement. It’s a constant, passive reminder that something good is coming.
This effect is especially powerful for children. Young kids struggle with abstract time concepts like “two weeks from now.” But when they can see the days and hours ticking down on a screen, the wait becomes concrete and manageable. It reduces the endless “how many more days?” questions and gives them a tangible way to understand the passage of time.
The goal is simple: get a full-screen countdown running on whatever screen you have available. Here’s how to do it on each type of device.
This is our favorite method for most homes because it’s simple and doesn’t tie up your main TV. Here’s the setup:
The most reliable method for a big display:
If you prefer wireless:
Wireless casting works well, but be aware that it relies on your Wi-Fi network. If your router is unreliable, the HDMI cable method is more stable.
Most modern smart TVs (Samsung, LG, Sony, Hisense) have a built-in web browser. Open it, type in the countdown URL, and you’re running — no extra devices needed. The downside is that smart TV browsers tend to be slow, and navigating with a TV remote is clunky. But once you’ve loaded the page, it works fine as a persistent display.
That old iPad Mini from 2017 sitting in a drawer? It’s perfect for this. Even tablets that are too slow for everyday use can handle a single web page with a countdown. Factory-reset the device if it’s sluggish, open only the countdown page, disable all notifications, and put it on a stand. You’ve essentially created a free dedicated countdown display.
The visual presentation of your countdown matters. A generic black-and-white countdown works, but matching the display to the holiday makes it feel intentional and festive. Here’s what we recommend:
Getting a countdown into true fullscreen mode removes browser chrome (the address bar, tabs, bookmarks bar) and creates a clean, distraction-free display. Here’s how on each platform:
Nothing ruins a countdown display faster than the screen going dark five minutes after you set it up. Here’s how to prevent it on every platform:
Teachers have told us that holiday countdown displays are one of the most surprisingly effective teaching tools they’ve used. Here’s why:
For classroom use, we recommend a projector or large TV at the front of the room. Use our classroom timer for activity transitions and the holiday countdown as an ambient display throughout the day.
In an office setting, a holiday countdown on a lobby TV or break room screen builds camaraderie and excitement for the company holiday party or end-of-year break. Set it up once and let it run — it requires zero maintenance and gives people something to smile about when they walk past.
At home, an ambient countdown works beautifully in the living room during the holiday season. Think of it as digital decor. A tablet on the mantel showing “14 days until Christmas” is the modern equivalent of an advent calendar, and it updates itself automatically. Pair it with holiday string lights and the effect is genuinely cozy.
Browse all holiday countdowns. Christmas, Halloween, Thanksgiving, New Year’s, and dozens more — all free, all fullscreen-ready.
View Holiday Countdowns →The easiest methods are: (1) connect a laptop via HDMI and open a countdown page in fullscreen, (2) use a Chromecast or Apple TV to cast a browser tab wirelessly, or (3) use your smart TV’s built-in web browser to navigate directly to a countdown site like setalarm.app. All three methods produce a clean, fullscreen display.
Yes. Even older iPads running iOS 12 or later work well as dedicated countdown displays. Open Safari, navigate to the countdown page, and enable Guided Access (Settings → Accessibility → Guided Access) to lock the screen to that app. Place the iPad on a stand, plug it in, and disable auto-lock under Display & Brightness settings.
It depends on the countdown tool. On SetAlarm, each holiday countdown page is tailored to that specific holiday, so a Christmas countdown has a different feel than a Halloween or Thanksgiving countdown. You can also customize the display by choosing colors and styles that match your decorations.
On iPads and iPhones, go to Settings → Display & Brightness → Auto-Lock and set it to Never. On Android, enable Developer Options and turn on “Stay Awake” while charging. On Windows, go to Settings → System → Power and set screen timeout to Never. On Mac, use System Settings → Displays → Advanced → Prevent automatic sleeping.