BEGIN:VCALENDAR VERSION:2.0 PRODID:-//Stellarhound//city-ics-v1//EN CALSCALE:GREGORIAN METHOD:PUBLISH X-WR-CALNAME:Stellarhound — Black Canyon of the Gunnison National Park da rk-sky nights X-WR-CALDESC:Nights when the Moon leaves Black Canyon of the Gunnison Natio nal Park's dark hours essentially moon-free (moon interference ≤ 15%\, t he deep-sky standard used across stellarhound.com). Deterministic moon & d arkness geometry via Skyfield + JPL DE440s (city-ics-v1). Cloud cover is n ot knowable this far ahead — check the live forecast at https://stellarh ound.com/dark-sites/black-canyon-of-the-gunnison-national-park?utm_source= calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_content=black-c anyon-of-the-gunnison-national-park closer to each window. REFRESH-INTERVAL;VALUE=DURATION:P1W X-PUBLISHED-TTL:P1W BEGIN:VEVENT UID:dark-site-window-black-canyon-of-the-gunnison-national-park-2026-08-07@ stellarhound.com DTSTAMP:20260719T000000Z DTSTART;VALUE=DATE:20260807 DTEND;VALUE=DATE:20260820 SUMMARY:Dark-sky window · 13 moon-free nights DESCRIPTION:13 nights with essentially moon-free dark hours at Black Canyon of the Gunnison National Park (nightly moon interference ≤ 15% — Moon below the horizon for nearly all of astronomical darkness\, or too thin t o matter).\n\nCloud is the one thing no calendar can promise. When a windo w gets close\, check the live per-night forecast: https://stellarhound.com /dark-sites/black-canyon-of-the-gunnison-national-park?utm_source=calendar &utm_medium=ics&utm_campaign=dark-site-windows&utm_content=black-canyon-of -the-gunnison-national-park\n\nRule city-ics-v1 — deterministic moon/dar kness geometry\, Skyfield + JPL DE440s. Not a weather forecast. URL:https://stellarhound.com/dark-sites/black-canyon-of-the-gunnison-nation al-park?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows& utm_content=black-canyon-of-the-gunnison-national-park CATEGORIES:dark-sky-window STATUS:CONFIRMED TRANSP:TRANSPARENT END:VEVENT BEGIN:VEVENT UID:dark-site-window-black-canyon-of-the-gunnison-national-park-2026-09-05@ stellarhound.com DTSTAMP:20260719T000000Z DTSTART;VALUE=DATE:20260905 DTEND;VALUE=DATE:20260918 SUMMARY:Dark-sky window · 13 moon-free nights DESCRIPTION:13 nights with essentially moon-free dark hours at Black Canyon of the Gunnison National Park (nightly moon interference ≤ 15% — Moon below the horizon for nearly all of astronomical darkness\, or too thin t o matter).\n\nCloud is the one thing no calendar can promise. When a windo w gets close\, check the live per-night forecast: https://stellarhound.com /dark-sites/black-canyon-of-the-gunnison-national-park?utm_source=calendar &utm_medium=ics&utm_campaign=dark-site-windows&utm_content=black-canyon-of -the-gunnison-national-park\n\nRule city-ics-v1 — deterministic moon/dar kness geometry\, Skyfield + JPL DE440s. Not a weather forecast. URL:https://stellarhound.com/dark-sites/black-canyon-of-the-gunnison-nation al-park?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows& utm_content=black-canyon-of-the-gunnison-national-park CATEGORIES:dark-sky-window STATUS:CONFIRMED TRANSP:TRANSPARENT END:VEVENT BEGIN:VEVENT UID:dark-site-window-black-canyon-of-the-gunnison-national-park-2026-10-04@ stellarhound.com DTSTAMP:20260719T000000Z DTSTART;VALUE=DATE:20261004 DTEND;VALUE=DATE:20261017 SUMMARY:Dark-sky window · 13 moon-free nights DESCRIPTION:13 nights with essentially moon-free dark hours at Black Canyon of the Gunnison National Park (nightly moon interference ≤ 15% — Moon below the horizon for nearly all of astronomical darkness\, or too thin t o matter).\n\nCloud is the one thing no calendar can promise. When a windo w gets close\, check the live per-night forecast: https://stellarhound.com /dark-sites/black-canyon-of-the-gunnison-national-park?utm_source=calendar &utm_medium=ics&utm_campaign=dark-site-windows&utm_content=black-canyon-of -the-gunnison-national-park\n\nRule city-ics-v1 — deterministic moon/dar kness geometry\, Skyfield + JPL DE440s. Not a weather forecast. URL:https://stellarhound.com/dark-sites/black-canyon-of-the-gunnison-nation al-park?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows& utm_content=black-canyon-of-the-gunnison-national-park CATEGORIES:dark-sky-window STATUS:CONFIRMED TRANSP:TRANSPARENT END:VEVENT BEGIN:VEVENT UID:dark-site-window-black-canyon-of-the-gunnison-national-park-2026-11-02@ stellarhound.com DTSTAMP:20260719T000000Z DTSTART;VALUE=DATE:20261102 DTEND;VALUE=DATE:20261116 SUMMARY:Dark-sky window · 14 moon-free nights DESCRIPTION:14 nights with essentially moon-free dark hours at Black Canyon of the Gunnison National Park (nightly moon interference ≤ 15% — Moon below the horizon for nearly all of astronomical darkness\, or too thin t o matter).\n\nCloud is the one thing no calendar can promise. When a windo w gets close\, check the live per-night forecast: https://stellarhound.com /dark-sites/black-canyon-of-the-gunnison-national-park?utm_source=calendar &utm_medium=ics&utm_campaign=dark-site-windows&utm_content=black-canyon-of -the-gunnison-national-park\n\nRule city-ics-v1 — deterministic moon/dar kness geometry\, Skyfield + JPL DE440s. Not a weather forecast. URL:https://stellarhound.com/dark-sites/black-canyon-of-the-gunnison-nation al-park?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows& utm_content=black-canyon-of-the-gunnison-national-park CATEGORIES:dark-sky-window STATUS:CONFIRMED TRANSP:TRANSPARENT END:VEVENT BEGIN:VEVENT UID:dark-site-window-black-canyon-of-the-gunnison-national-park-2026-12-02@ stellarhound.com DTSTAMP:20260719T000000Z DTSTART;VALUE=DATE:20261202 DTEND;VALUE=DATE:20261215 SUMMARY:Dark-sky window · 13 moon-free nights DESCRIPTION:13 nights with essentially moon-free dark hours at Black Canyon of the Gunnison National Park (nightly moon interference ≤ 15% — Moon below the horizon for nearly all of astronomical darkness\, or too thin t o matter).\n\nCloud is the one thing no calendar can promise. When a windo w gets close\, check the live per-night forecast: https://stellarhound.com /dark-sites/black-canyon-of-the-gunnison-national-park?utm_source=calendar &utm_medium=ics&utm_campaign=dark-site-windows&utm_content=black-canyon-of -the-gunnison-national-park\n\nRule city-ics-v1 — deterministic moon/dar kness geometry\, Skyfield + JPL DE440s. Not a weather forecast. URL:https://stellarhound.com/dark-sites/black-canyon-of-the-gunnison-nation al-park?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows& utm_content=black-canyon-of-the-gunnison-national-park CATEGORIES:dark-sky-window STATUS:CONFIRMED TRANSP:TRANSPARENT END:VEVENT BEGIN:VEVENT UID:dark-site-window-black-canyon-of-the-gunnison-national-park-2026-12-31@ stellarhound.com DTSTAMP:20260719T000000Z DTSTART;VALUE=DATE:20261231 DTEND;VALUE=DATE:20270114 SUMMARY:Dark-sky window · 14 moon-free nights DESCRIPTION:14 nights with essentially moon-free dark hours at Black Canyon of the Gunnison National Park (nightly moon interference ≤ 15% — Moon below the horizon for nearly all of astronomical darkness\, or too thin t o matter).\n\nCloud is the one thing no calendar can promise. When a windo w gets close\, check the live per-night forecast: https://stellarhound.com /dark-sites/black-canyon-of-the-gunnison-national-park?utm_source=calendar &utm_medium=ics&utm_campaign=dark-site-windows&utm_content=black-canyon-of -the-gunnison-national-park\n\nRule city-ics-v1 — deterministic moon/dar kness geometry\, Skyfield + JPL DE440s. Not a weather forecast. URL:https://stellarhound.com/dark-sites/black-canyon-of-the-gunnison-nation al-park?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows& utm_content=black-canyon-of-the-gunnison-national-park CATEGORIES:dark-sky-window STATUS:CONFIRMED TRANSP:TRANSPARENT END:VEVENT BEGIN:VEVENT UID:dark-site-window-black-canyon-of-the-gunnison-national-park-2027-01-29@ stellarhound.com DTSTAMP:20260719T000000Z DTSTART;VALUE=DATE:20270129 DTEND;VALUE=DATE:20270212 SUMMARY:Dark-sky window · 14 moon-free nights DESCRIPTION:14 nights with essentially moon-free dark hours at Black Canyon of the Gunnison National Park (nightly moon interference ≤ 15% — Moon below the horizon for nearly all of astronomical darkness\, or too thin t o matter).\n\nCloud is the one thing no calendar can promise. When a windo w gets close\, check the live per-night forecast: https://stellarhound.com /dark-sites/black-canyon-of-the-gunnison-national-park?utm_source=calendar &utm_medium=ics&utm_campaign=dark-site-windows&utm_content=black-canyon-of -the-gunnison-national-park\n\nRule city-ics-v1 — deterministic moon/dar kness geometry\, Skyfield + JPL DE440s. Not a weather forecast. URL:https://stellarhound.com/dark-sites/black-canyon-of-the-gunnison-nation al-park?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows& utm_content=black-canyon-of-the-gunnison-national-park CATEGORIES:dark-sky-window STATUS:CONFIRMED TRANSP:TRANSPARENT END:VEVENT BEGIN:VEVENT UID:dark-site-window-black-canyon-of-the-gunnison-national-park-2027-02-28@ stellarhound.com DTSTAMP:20260719T000000Z DTSTART;VALUE=DATE:20270228 DTEND;VALUE=DATE:20270313 SUMMARY:Dark-sky window · 13 moon-free nights DESCRIPTION:13 nights with essentially moon-free dark hours at Black Canyon of the Gunnison National Park (nightly moon interference ≤ 15% — Moon below the horizon for nearly all of astronomical darkness\, or too thin t o matter).\n\nCloud is the one thing no calendar can promise. When a windo w gets close\, check the live per-night forecast: https://stellarhound.com /dark-sites/black-canyon-of-the-gunnison-national-park?utm_source=calendar &utm_medium=ics&utm_campaign=dark-site-windows&utm_content=black-canyon-of -the-gunnison-national-park\n\nRule city-ics-v1 — deterministic moon/dar kness geometry\, Skyfield + JPL DE440s. Not a weather forecast. URL:https://stellarhound.com/dark-sites/black-canyon-of-the-gunnison-nation al-park?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows& utm_content=black-canyon-of-the-gunnison-national-park CATEGORIES:dark-sky-window STATUS:CONFIRMED TRANSP:TRANSPARENT END:VEVENT BEGIN:VEVENT UID:dark-site-window-black-canyon-of-the-gunnison-national-park-2027-03-29@ stellarhound.com DTSTAMP:20260719T000000Z DTSTART;VALUE=DATE:20270329 DTEND;VALUE=DATE:20270411 SUMMARY:Dark-sky window · 13 moon-free nights DESCRIPTION:13 nights with essentially moon-free dark hours at Black Canyon of the Gunnison National Park (nightly moon interference ≤ 15% — Moon below the horizon for nearly all of astronomical darkness\, or too thin t o matter).\n\nCloud is the one thing no calendar can promise. When a windo w gets close\, check the live per-night forecast: https://stellarhound.com /dark-sites/black-canyon-of-the-gunnison-national-park?utm_source=calendar &utm_medium=ics&utm_campaign=dark-site-windows&utm_content=black-canyon-of -the-gunnison-national-park\n\nRule city-ics-v1 — deterministic moon/dar kness geometry\, Skyfield + JPL DE440s. Not a weather forecast. URL:https://stellarhound.com/dark-sites/black-canyon-of-the-gunnison-nation al-park?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows& utm_content=black-canyon-of-the-gunnison-national-park CATEGORIES:dark-sky-window STATUS:CONFIRMED TRANSP:TRANSPARENT END:VEVENT BEGIN:VEVENT UID:dark-site-window-black-canyon-of-the-gunnison-national-park-2027-04-28@ stellarhound.com DTSTAMP:20260719T000000Z DTSTART;VALUE=DATE:20270428 DTEND;VALUE=DATE:20270511 SUMMARY:Dark-sky window · 13 moon-free nights DESCRIPTION:13 nights with essentially moon-free dark hours at Black Canyon of the Gunnison National Park (nightly moon interference ≤ 15% — Moon below the horizon for nearly all of astronomical darkness\, or too thin t o matter).\n\nCloud is the one thing no calendar can promise. When a windo w gets close\, check the live per-night forecast: https://stellarhound.com /dark-sites/black-canyon-of-the-gunnison-national-park?utm_source=calendar &utm_medium=ics&utm_campaign=dark-site-windows&utm_content=black-canyon-of -the-gunnison-national-park\n\nRule city-ics-v1 — deterministic moon/dar kness geometry\, Skyfield + JPL DE440s. Not a weather forecast. URL:https://stellarhound.com/dark-sites/black-canyon-of-the-gunnison-nation al-park?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows& utm_content=black-canyon-of-the-gunnison-national-park CATEGORIES:dark-sky-window STATUS:CONFIRMED TRANSP:TRANSPARENT END:VEVENT BEGIN:VEVENT UID:dark-site-window-black-canyon-of-the-gunnison-national-park-2027-05-29@ stellarhound.com DTSTAMP:20260719T000000Z DTSTART;VALUE=DATE:20270529 DTEND;VALUE=DATE:20270609 SUMMARY:Dark-sky window · 11 moon-free nights DESCRIPTION:11 nights with essentially moon-free dark hours at Black Canyon of the Gunnison National Park (nightly moon interference ≤ 15% — Moon below the horizon for nearly all of astronomical darkness\, or too thin t o matter).\n\nCloud is the one thing no calendar can promise. When a windo w gets close\, check the live per-night forecast: https://stellarhound.com /dark-sites/black-canyon-of-the-gunnison-national-park?utm_source=calendar &utm_medium=ics&utm_campaign=dark-site-windows&utm_content=black-canyon-of -the-gunnison-national-park\n\nRule city-ics-v1 — deterministic moon/dar kness geometry\, Skyfield + JPL DE440s. Not a weather forecast. URL:https://stellarhound.com/dark-sites/black-canyon-of-the-gunnison-nation al-park?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows& utm_content=black-canyon-of-the-gunnison-national-park CATEGORIES:dark-sky-window STATUS:CONFIRMED TRANSP:TRANSPARENT END:VEVENT BEGIN:VEVENT UID:dark-site-window-black-canyon-of-the-gunnison-national-park-2027-06-28@ stellarhound.com DTSTAMP:20260719T000000Z DTSTART;VALUE=DATE:20270628 DTEND;VALUE=DATE:20270710 SUMMARY:Dark-sky window · 12 moon-free nights DESCRIPTION:12 nights with essentially moon-free dark hours at Black Canyon of the Gunnison National Park (nightly moon interference ≤ 15% — Moon below the horizon for nearly all of astronomical darkness\, or too thin t o matter).\n\nCloud is the one thing no calendar can promise. When a windo w gets close\, check the live per-night forecast: https://stellarhound.com /dark-sites/black-canyon-of-the-gunnison-national-park?utm_source=calendar &utm_medium=ics&utm_campaign=dark-site-windows&utm_content=black-canyon-of -the-gunnison-national-park\n\nRule city-ics-v1 — deterministic moon/dar kness geometry\, Skyfield + JPL DE440s. Not a weather forecast. URL:https://stellarhound.com/dark-sites/black-canyon-of-the-gunnison-nation al-park?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows& utm_content=black-canyon-of-the-gunnison-national-park CATEGORIES:dark-sky-window STATUS:CONFIRMED TRANSP:TRANSPARENT END:VEVENT BEGIN:VEVENT UID:dark-site-window-black-canyon-of-the-gunnison-national-park-2027-07-28@ stellarhound.com DTSTAMP:20260719T000000Z DTSTART;VALUE=DATE:20270728 DTEND;VALUE=DATE:20270809 SUMMARY:Dark-sky window · 12 moon-free nights DESCRIPTION:12 nights with essentially moon-free dark hours at Black Canyon of the Gunnison National Park (nightly moon interference ≤ 15% — Moon below the horizon for nearly all of astronomical darkness\, or too thin t o matter).\n\nCloud is the one thing no calendar can promise. When a windo w gets close\, check the live per-night forecast: https://stellarhound.com /dark-sites/black-canyon-of-the-gunnison-national-park?utm_source=calendar &utm_medium=ics&utm_campaign=dark-site-windows&utm_content=black-canyon-of -the-gunnison-national-park\n\nRule city-ics-v1 — deterministic moon/dar kness geometry\, Skyfield + JPL DE440s. Not a weather forecast. URL:https://stellarhound.com/dark-sites/black-canyon-of-the-gunnison-nation al-park?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows& utm_content=black-canyon-of-the-gunnison-national-park CATEGORIES:dark-sky-window STATUS:CONFIRMED TRANSP:TRANSPARENT END:VEVENT BEGIN:VEVENT UID:dark-site-window-black-canyon-of-the-gunnison-national-park-2027-08-26@ stellarhound.com DTSTAMP:20260719T000000Z DTSTART;VALUE=DATE:20270826 DTEND;VALUE=DATE:20270907 SUMMARY:Dark-sky window · 12 moon-free nights DESCRIPTION:12 nights with essentially moon-free dark hours at Black Canyon of the Gunnison National Park (nightly moon interference ≤ 15% — Moon below the horizon for nearly all of astronomical darkness\, or too thin t o matter).\n\nCloud is the one thing no calendar can promise. When a windo w gets close\, check the live per-night forecast: https://stellarhound.com /dark-sites/black-canyon-of-the-gunnison-national-park?utm_source=calendar &utm_medium=ics&utm_campaign=dark-site-windows&utm_content=black-canyon-of -the-gunnison-national-park\n\nRule city-ics-v1 — deterministic moon/dar kness geometry\, Skyfield + JPL DE440s. Not a weather forecast. URL:https://stellarhound.com/dark-sites/black-canyon-of-the-gunnison-nation al-park?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows& utm_content=black-canyon-of-the-gunnison-national-park CATEGORIES:dark-sky-window STATUS:CONFIRMED TRANSP:TRANSPARENT END:VEVENT BEGIN:VEVENT UID:dark-site-window-black-canyon-of-the-gunnison-national-park-2027-09-24@ stellarhound.com DTSTAMP:20260719T000000Z DTSTART;VALUE=DATE:20270924 DTEND;VALUE=DATE:20271006 SUMMARY:Dark-sky window · 12 moon-free nights DESCRIPTION:12 nights with essentially moon-free dark hours at Black Canyon of the Gunnison National Park (nightly moon interference ≤ 15% — Moon below the horizon for nearly all of astronomical darkness\, or too thin t o matter).\n\nCloud is the one thing no calendar can promise. When a windo w gets close\, check the live per-night forecast: https://stellarhound.com /dark-sites/black-canyon-of-the-gunnison-national-park?utm_source=calendar &utm_medium=ics&utm_campaign=dark-site-windows&utm_content=black-canyon-of -the-gunnison-national-park\n\nRule city-ics-v1 — deterministic moon/dar kness geometry\, Skyfield + JPL DE440s. Not a weather forecast. URL:https://stellarhound.com/dark-sites/black-canyon-of-the-gunnison-nation al-park?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows& utm_content=black-canyon-of-the-gunnison-national-park CATEGORIES:dark-sky-window STATUS:CONFIRMED TRANSP:TRANSPARENT END:VEVENT BEGIN:VEVENT UID:dark-site-window-black-canyon-of-the-gunnison-national-park-2027-10-23@ stellarhound.com DTSTAMP:20260719T000000Z DTSTART;VALUE=DATE:20271023 DTEND;VALUE=DATE:20271105 SUMMARY:Dark-sky window · 13 moon-free nights DESCRIPTION:13 nights with essentially moon-free dark hours at Black Canyon of the Gunnison National Park (nightly moon interference ≤ 15% — Moon below the horizon for nearly all of astronomical darkness\, or too thin t o matter).\n\nCloud is the one thing no calendar can promise. When a windo w gets close\, check the live per-night forecast: https://stellarhound.com /dark-sites/black-canyon-of-the-gunnison-national-park?utm_source=calendar &utm_medium=ics&utm_campaign=dark-site-windows&utm_content=black-canyon-of -the-gunnison-national-park\n\nRule city-ics-v1 — deterministic moon/dar kness geometry\, Skyfield + JPL DE440s. Not a weather forecast. URL:https://stellarhound.com/dark-sites/black-canyon-of-the-gunnison-nation al-park?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows& utm_content=black-canyon-of-the-gunnison-national-park CATEGORIES:dark-sky-window STATUS:CONFIRMED TRANSP:TRANSPARENT END:VEVENT BEGIN:VEVENT UID:dark-site-window-black-canyon-of-the-gunnison-national-park-2027-11-21@ stellarhound.com DTSTAMP:20260719T000000Z DTSTART;VALUE=DATE:20271121 DTEND;VALUE=DATE:20271204 SUMMARY:Dark-sky window · 13 moon-free nights DESCRIPTION:13 nights with essentially moon-free dark hours at Black Canyon of the Gunnison National Park (nightly moon interference ≤ 15% — Moon below the horizon for nearly all of astronomical darkness\, or too thin t o matter).\n\nCloud is the one thing no calendar can promise. When a windo w gets close\, check the live per-night forecast: https://stellarhound.com /dark-sites/black-canyon-of-the-gunnison-national-park?utm_source=calendar &utm_medium=ics&utm_campaign=dark-site-windows&utm_content=black-canyon-of -the-gunnison-national-park\n\nRule city-ics-v1 — deterministic moon/dar kness geometry\, Skyfield + JPL DE440s. Not a weather forecast. URL:https://stellarhound.com/dark-sites/black-canyon-of-the-gunnison-nation al-park?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows& utm_content=black-canyon-of-the-gunnison-national-park CATEGORIES:dark-sky-window STATUS:CONFIRMED TRANSP:TRANSPARENT END:VEVENT BEGIN:VEVENT UID:dark-site-window-black-canyon-of-the-gunnison-national-park-2027-12-21@ stellarhound.com DTSTAMP:20260719T000000Z DTSTART;VALUE=DATE:20271221 DTEND;VALUE=DATE:20280101 SUMMARY:Dark-sky window · 11 moon-free nights DESCRIPTION:11 nights with essentially moon-free dark hours at Black Canyon of the Gunnison National Park (nightly moon interference ≤ 15% — Moon below the horizon for nearly all of astronomical darkness\, or too thin t o matter).\n\nCloud is the one thing no calendar can promise. When a windo w gets close\, check the live per-night forecast: https://stellarhound.com /dark-sites/black-canyon-of-the-gunnison-national-park?utm_source=calendar &utm_medium=ics&utm_campaign=dark-site-windows&utm_content=black-canyon-of -the-gunnison-national-park\n\nRule city-ics-v1 — deterministic moon/dar kness geometry\, Skyfield + JPL DE440s. Not a weather forecast. URL:https://stellarhound.com/dark-sites/black-canyon-of-the-gunnison-nation al-park?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows& utm_content=black-canyon-of-the-gunnison-national-park CATEGORIES:dark-sky-window STATUS:CONFIRMED TRANSP:TRANSPARENT END:VEVENT END:VCALENDAR