Days Until Christmas

Christmas falls on December 25th every year, and knowing exactly how many days remain is useful for more than just excitement — it drives gift buying, shipping deadlines, baking schedules, travel bookings, and decorating timelines. This countdown automatically reads today's date and computes the days remaining until December 25th. If Christmas has already passed this calendar year, the calculator rolls over to December 25th of the following year so the count is always forward-looking. Children use it to mark the season; online retailers use similar countdowns to drive urgency; event planners use it to back-schedule tasks. No input is needed — the result updates every time the page loads.

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.