Park Drops
When can I book this?
Campgrounds, permits, and timed entry run on rules like “five months ahead on the 15th at 7 AM.” Tell us what you want and when, and we'll turn the rule into the exact date to set an alarm for.
Examples
What we track
17 reservation systems across 7 parks. Each one is in here because we verified its release rule against the official source, not because it was easy to scrape.
How this works
Every park publishes a release rule somewhere: a rolling window, a monthly batch, a lottery. We keep a verified copy of each rule with its official source and its effective dates, and we do the calendar arithmetic for your trip date. That's the whole trick.
What we don't do: track live availability, watch cancellations, or promise you'll get a site. Booking opens when it opens; how fast it sells is between you, everyone else with an alarm set, and the reservation system. The full method.