Your selection is stored only in this browser (localStorage) — no account needed. Date windows verified 2026-10-01 against recreation.gov, NPS, BLM and USFS; TBD windows are typical yearly patterns. Always confirm on the official site: 你的勾选只保存在本浏览器（localStorage），无需注册账号。日期窗口核实于 2026-10-01，来源 recreation.gov、NPS、BLM、USFS；TBD 窗口为历年常规规律。请以官网为准： recreation.gov · nps.gov