Days Until Christmas
Calculate how many days are left until Christmas.
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Enter your values and click Calculate
How It Works
The calculator reads today's date using JavaScript's new Date() and extracts the current year. It then creates a target Date object set to December 25 of that year using new Date(year, 11, 25) — month 11 because JavaScript months are zero-indexed. If today's date is already past December 25, the target advances to December 25 of the following year. The difference between the target and now is computed in milliseconds, divided by the number of milliseconds in a day (86,400,000), and rounded up with Math.ceil so that any partial day counts as a full remaining day.
Examples
Mid-December
Running the calculator on December 15th.
Result: Shows 10 days until Christmas.
Day After Christmas
Running the calculator on December 26th.
Result: Shows 364 days until next Christmas.
First of the Year
Running the calculator on January 1st.
Result: Shows 358 days until Christmas (359 in a leap year).
Frequently Asked Questions
Does this update automatically?
Yes. The calculator reads your device's current date every time the page loads, so the count is always accurate to today without any manual input.
What if today is Christmas?
If today is December 25th, the difference between now and the target is less than one day, so Math.ceil rounds it up to 0 or 1 depending on the exact time. For most practical purposes it shows 0 or 1 day remaining.
Does the calculator account for time zones?
It uses your device's local time, so the countdown reflects your local December 25th. Users in different time zones will see the rollover happen at local midnight on December 25th.