itOpened Blog · Cancellation Data
Which Day of the Week Do Openings Last Longest?
Every survival split we have published so far cuts the data by the opening — how far ahead it appeared, how many nights it offered, which campground it sat in. This one cuts it by the trip: the weekday the stay starts on. Across 675 completed life cycles, the weekday spread is the widest we have measured: Saturday-start openings lived a median 1h 40m, while Sunday-start openings lived 4h 23m — and Sunday starts are, by a wide margin, the most common openings in the entire log.
Quick answers
- Which stay weekday's openings disappear fastest?
- Saturday starts: a median survival of 1h 40m across 73 completed life cycles. Friday starts are nearly as fast at 1h 51m (n=164). Weekend-trip inventory is the most contested inventory in the log.
- Which stay weekday's openings last longest?
- Sunday starts: a median of 4h 23m across 192 completed life cycles — more than double the Saturday-start median, on the largest weekday sample in the table.
- Which weekday produces the most openings?
- Sunday starts, and it is not close: 523 of the 1762 non-Cape-Point confirmed openings in the alert log are for stays starting on a Sunday, ahead of Friday starts at 325. The slowest weekday is also the deepest supply.
- Is this proof that weekday causes the difference?
- No — and the post says so. This is a descriptive split of one shoulder-season sample, not a controlled comparison: facility mix, stay length and lead time all vary by weekday and are not held constant here.
Watch it with itOpened
Upper Pines reopened 191 times in our log — its Friday starts die in under two hours.
Weekend-start openings are the fastest clock we have measured. Our scanners poll Upper Pines around the clock and text you while a Friday or Saturday start is still bookable — not after the weekend crowd takes it.
Proof, from our own scanners: 191 confirmed openings at Upper Pines since Oct 29, 2026 — each one re-verified before logging. See the live cancellation index.
Watch Upper Pines openingsFree to start. We never book, hold, or resell — you book it yourself, in your own account, at the normal price. Fees pay for monitoring; openings are first-come and cannot be guaranteed.
A cancelled campsite is not just a place and a date. It is a place, a date — and a position in somebody's week. A site that frees up for a Friday arrival plugs into a weekend that thousands of people have already arranged their lives around. A site that frees up for a Sunday arrival asks its next owner to start a trip when the weekend crowd is driving home. Hunters feel that difference intuitively; until now, nobody we know of has published it as a measurement. Our closure log — 675 openings followed from confirmed detection to confirmed disappearance — supports the split, so here it is, cut by the weekday on which the stay's first night falls.
The table: median survival by stay weekday
| Stay starts on | Completed life cycles (n) | Median survival | Confirmed openings in alert log |
|---|---|---|---|
| Monday | 70 | 3h 25m | 209 |
| Tuesday | 59 | 4h 08m | 174 |
| Wednesday | 58 | 3h 07m | 179 |
| Thursday | 59 | 2h 00m | 146 |
| Friday | 164 | 1h 51m | 325 |
| Saturday | 73 | 1h 40m | 206 |
| Sunday | 192 | 4h 23m | 523 |
Read the shape, not just the extremes. The two classic weekend-arrival days are the two fastest clocks in the table: Saturday starts at 1h 40m and Friday starts at 1h 51m. That is the weekend effect in its purest form — an opening that completes a Friday-to-Sunday trip is usable by essentially every hunter watching that campground, exactly as drawn, with no schedule surgery. Universal fit clears fast, the same mechanism that made multi-night openings the fastest in our stay-length split. Midweek starts sit in the middle of the table. And then there is Sunday.
The Sunday anomaly: most supply, slowest clock
Sunday-start openings break the pattern twice. They are the largest single supply in the alert log — 523 of 1762 non-Cape-Point confirmed openings, roughly one in every three or four openings our scanners have ever recorded, well ahead of Friday's 325. And they are the slowest to die: a median 4h 23m across 192 completed life cycles, the largest weekday sample in the closure log, so the figure does not rest on a handful of stragglers.
The plausible mechanics are interpretation, labeled as such. A Sunday-start stay is a trip that begins as the weekend ends: its natural owners are retirees, remote workers, road-trippers mid-route and locals with shifted weeks — a real population, but a smaller and less synchronized one than the Friday-arrival crowd, and one that books on its own schedule rather than in a Friday-shaped rush. Supply, meanwhile, is fed by exactly the opposite motion: weekend holders who extend, shift or abandon the tail of a trip release Sunday-forward inventory as their plans settle. Deep supply meeting a thinner, less frantic queue is precisely the recipe for a slower clock — the same recipe, in mirror image, that makes Friday starts the fastest.
What this changes, practically
If your schedule bends, hunt the bend. A hunter who can start on Sunday is fishing the deepest flow in the log at the slowest measured clock — the single most favorable combination any split we have published has produced. If you need a Friday start, pre-decide everything. At a 1h 51m median, a Friday-start opening is a respond-in-minutes event: acceptable sites, dates and payment settled before the alert, not after. Saturday starts are the sprint. The fastest clock in the table (1h 40m, n=73) belongs to the classic one-night-weekend trip — treat any Saturday opening at a target campground as effectively instant-decision inventory. Use midweek as the training ground. Monday-through-Thursday starts live in the 2h 00m–4h 08m band — long enough to practice the full alert-to-booking motion at real stakes before a Friday depends on it.
The limits, plainly
This is a descriptive split, and we present it as one. Weekday is entangled with everything else: Sunday-start openings skew toward longer stays in this sample's shape, facility mix differs by weekday, and lead times differ too — none of that is held constant here, so no sentence in this post claims weekday causes a clock. The sample is one shoulder season — stays in November and December 2026, detected from Oct 29, 10:54 PM ET to Nov 01, 05:30 AM ET — and the weekday that dominates a November log, when weekends are the main camping product, may not dominate a July log, when every day is a vacation day. Right-censoring biases all medians modestly downward, as in every survival post on this site. What survives the caveats is the ordering and its size: in the only measured sample that exists, weekend-start openings die in under two hours at the median, Sunday starts live more than twice as long, and the gap is wide enough — on samples of 73 to 192 completed cycles — that a flexible hunter should plan around it. The live counts are on the cancellation index; the method is on the methodology page.
Watch it with itOpened
Upper Pines reopened 191 times in our log — its Friday starts die in under two hours.
Weekend-start openings are the fastest clock we have measured. Our scanners poll Upper Pines around the clock and text you while a Friday or Saturday start is still bookable — not after the weekend crowd takes it.
Proof, from our own scanners: 191 confirmed openings at Upper Pines since Oct 29, 2026 — each one re-verified before logging. See the live cancellation index.
Watch Upper Pines openingsFree to start. We never book, hold, or resell — you book it yourself, in your own account, at the normal price. Fees pay for monitoring; openings are first-come and cannot be guaranteed.
Frequently asked questions
Do weekend campsite openings really disappear faster?
In this sample, yes: stays starting on Saturday lived a median 1h 40m (n=73) and Friday starts 1h 51m (n=164), against an all-weekday median of 2h 37m across 675 completed life cycles.
Why do Sunday-start openings last longest?
Sunday starts combine the deepest supply in the log (523 confirmed openings) with a buyer pool that is not synchronized to the weekend — a plausible mechanism, offered as interpretation. The measurement itself is the median: 4h 23m across 192 completed life cycles.
Which day is best for finding a cancelled campsite?
On this evidence, a Sunday start: most openings in the log and the slowest median clock. That answer is a description of one shoulder-season sample (November–December 2026 stays), not a guarantee for other seasons.
How was this measured?
Each confirmed opening is followed until two consecutive polls find it gone; survival is detection to confirmed disappearance. Stays are grouped by the weekday of their first night. Facility mix, stay length and lead time are not held constant — the split is descriptive, and the post says so.
Sources
- itOpened scanner closure log (engine/closures.jsonl), sample closing Nov 01, 05:30 AM ET: 675 completed opening life cycles (ambiguous records excluded), grouped by the weekday of the stay's first night: Monday 3h 25m (n=70); Tuesday 4h 08m (n=59); Wednesday 3h 07m (n=58); Thursday 2h 00m (n=59); Friday 1h 51m (n=164); Saturday 1h 40m (n=73); Sunday 4h 23m (n=192). Overall median survival 2h 37m. All figures computed from the log at build time.
- itOpened production scanner alert log (engine/alerts.jsonl), Oct 29, 10:54 PM ET – Nov 01, 05:30 AM ET: 1762 non-Cape-Point confirmed openings grouped by stay-start weekday: Monday 209; Tuesday 174; Wednesday 179; Thursday 146; Friday 325; Saturday 206; Sunday 523. Cape Point Campground's bulk seasonal event is excluded, as in every analysis on this site.
- itOpened, 'Do last-minute campsite openings vanish faster?' (/blog/do-last-minute-campsite-openings-vanish-faster/): the lead-time and stay-length splits whose universal-fit mechanism this post's weekend pattern echoes.
- itOpened methodology (/methodology/): poll cadence, confirmation standard, and closure definition.
Every figure in this article traces to one of the sources above. If a number isn't sourced, we don't print it.
Last updated 2026-10-30.