Data verified 2026-10-01 against recreation.gov, NPS, BLM and USFS official pages. Windows marked TBD are typical yearly patterns — confirm before applying. Odds marked "est." are third-party estimates, not official figures. Always apply on the official site: 数据核实于 2026-10-01，来源为 recreation.gov、NPS、BLM 与 USFS 官方页面。标 TBD 的窗口为历年常规规律——申请前请再次确认。标 "est." 的中签率为第三方估算，非官方数据。请务必在官方网站申请： recreation.gov · nps.gov
