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UntilDay — How many days until anything — 18 websites ranked by shared content topics, category and on-page relevance.

Each result shows its full tech stack, contacts and AI-policy — not just a name · Browse all sites in Holidays →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
holidaycountdown.net ↗	75 match 1 shared topics	How Many Days Until? • Holiday Countdown 2026 \| HolidayCountdown	en	holidays	robotsllmsaihumans	emailphone	none
howmanydays.com ↗	74 match 1 shared topics	How Many Days - The Countdown Site	en	holidays WordPress WooCommerce	robotsllmsaihumans	emailphone	none
howmanydaysuntilhalloween.org ↗	74 match 1 shared topics	How Many Days Until Halloween 2026? \| Official Countdown	en	holidays	robotsllmsaihumans	emailphone	none
nowtochristmas.com ↗	74 match 1 shared topics	Christmas Countdown 2025 - How Many Days Until Christmas?	en	holidays	robotsllmsaihumans	emailphone	none
howmanydaysuntileaster.com ↗	73 match 1 shared topics	How Many Days Until Easter \| Easter Countdown Timer	en	holidays	robotsllmsaihumans	emailphone	none
tymily.com ↗	73 match 1 shared topics	Tymily - Countdown Timer & Days Until Calculator	en	holidays	robotsllmsaihumans	emailphone	partial · 8
howmanydaysbetween.com ↗	69 match 1 shared topics	Days Until Calculator \| Count Days to Any Future Date	en	holidays WordPress	robotsllmsaihumans	emailphone	none
howmanydaystill.org ↗	66 match 1 shared topics	HowManyDaysTill.org - Count Down to Important Dates	en	holidays	robotsllmsaihumans	emailphone	none
holidaycountdown.app ↗	66 match 1 shared topics	Holiday Countdown \| Countdown to your favourite holidays!	en	holidays	robotsllmsaihumans	emailphone	none
holidaydates.org ↗	66 match 1 shared topics	Public Holidays in Germany 2026 — 29 Official Holidays \| HolidayDates	en	holidays	robotsllmsaihumans	emailphone	none
holidaycounters.com ↗	65 match 1 shared topics	HolidayCounter – Elegant Holiday Countdowns	en	holidays	robotsllmsaihumans	emailphone	none
calendar.cx ↗	64 match 1 shared topics	Calendar.cx — Today's Holidays, National Days & Observances	en	holidays WordPress	robotsllmsaihumans	emailphone	none
holidaysinsf.com ↗	64 match 1 shared topics	HOLIDAYS IN SF - Holidays in SF	en	holidays Weebly	robotsllmsaihumans	emailphone	none
picklenook.com ↗	64 match 1 shared topics	Christmas Adventure — Official Site	en	holidays	robotsllmsaihumans	emailphone	none
hopeholidayscny.com ↗	64 match 1 shared topics	Hope for the Holidays - Old Newsboys Christmas Fundraiser	United States~ en	holidays WordPress	robotsllmsaihumans	email phone	none
100daystilchristmas.com ↗	64 match 1 shared topics	100 Days til Christmas	en	holidays WordPress	robotsllmsaihumans	emailphone	none
mediapickle.me ↗	63 match 1 shared topics	Global Holiday Calendar API for National and Religious Holidays - Calendarific	en	holidays	robotsllmsaihumans	emailphone	none
currencyindex.net ↗	63 match 1 shared topics	Global Holiday Calendar API for National and Religious Holidays - Calendarific	en	holidays	robotsllmsaihumans	emailphone	none

How the match score works

Each match is a 0–100 similarity score — the higher it is, the more two sites resemble one another. It’s computed automatically from our own crawl data (never from what a site says about itself) by combining several independent signals, so a high score means several of them point the same way:

shared topics how many of the same fine‑grained content topics (IAB sub‑categories) both sites cover — the main signal.
same category whether they sit in the same business / industry category.
content & title how closely their titles and page descriptions line up in wording and meaning.

No single signal decides the result — they’re blended together. Treat the score as a way to rank candidates rather than an absolute percentage; the chips on each result show which signals contributed.