BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Stellarhound//city-ics-v1//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME:Stellarhound — Eryri National Park (Snowdonia) dark-sky nigh
 ts
X-WR-CALDESC:Nights when the Moon leaves Eryri National Park (Snowdonia)'s 
 dark hours essentially moon-free (moon interference ≤ 15%\, the deep-sky
  standard used across stellarhound.com). Deterministic moon & darkness geo
 metry via Skyfield + JPL DE440s (city-ics-v1). Cloud cover is not knowable
  this far ahead — check the live forecast at https://stellarhound.com/da
 rk-sites/eryri-national-park-snowdonia?utm_source=calendar&utm_medium=ics&
 utm_campaign=dark-site-windows&utm_content=eryri-national-park-snowdonia c
 loser to each window.
REFRESH-INTERVAL;VALUE=DURATION:P1W
X-PUBLISHED-TTL:P1W
BEGIN:VEVENT
UID:dark-site-window-eryri-national-park-snowdonia-2026-08-08@stellarhound.
 com
DTSTAMP:20260719T000000Z
DTSTART;VALUE=DATE:20260808
DTEND;VALUE=DATE:20260822
SUMMARY:Dark-sky window · 14 moon-free nights
DESCRIPTION:14 nights with essentially moon-free dark hours at Eryri Nation
 al Park (Snowdonia) (nightly moon interference ≤ 15% — Moon below the 
 horizon for nearly all of astronomical darkness\, or too thin to matter).\
 n\nCloud is the one thing no calendar can promise. When a window gets clos
 e\, check the live per-night forecast: https://stellarhound.com/dark-sites
 /eryri-national-park-snowdonia?utm_source=calendar&utm_medium=ics&utm_camp
 aign=dark-site-windows&utm_content=eryri-national-park-snowdonia\n\nRule c
 ity-ics-v1 — deterministic moon/darkness geometry\, Skyfield + JPL DE440
 s. Not a weather forecast.
URL:https://stellarhound.com/dark-sites/eryri-national-park-snowdonia?utm_s
 ource=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_content=e
 ryri-national-park-snowdonia
CATEGORIES:dark-sky-window
STATUS:CONFIRMED
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:dark-site-window-eryri-national-park-snowdonia-2026-09-06@stellarhound.
 com
DTSTAMP:20260719T000000Z
DTSTART;VALUE=DATE:20260906
DTEND;VALUE=DATE:20260920
SUMMARY:Dark-sky window · 14 moon-free nights
DESCRIPTION:14 nights with essentially moon-free dark hours at Eryri Nation
 al Park (Snowdonia) (nightly moon interference ≤ 15% — Moon below the 
 horizon for nearly all of astronomical darkness\, or too thin to matter).\
 n\nCloud is the one thing no calendar can promise. When a window gets clos
 e\, check the live per-night forecast: https://stellarhound.com/dark-sites
 /eryri-national-park-snowdonia?utm_source=calendar&utm_medium=ics&utm_camp
 aign=dark-site-windows&utm_content=eryri-national-park-snowdonia\n\nRule c
 ity-ics-v1 — deterministic moon/darkness geometry\, Skyfield + JPL DE440
 s. Not a weather forecast.
URL:https://stellarhound.com/dark-sites/eryri-national-park-snowdonia?utm_s
 ource=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_content=e
 ryri-national-park-snowdonia
CATEGORIES:dark-sky-window
STATUS:CONFIRMED
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:dark-site-window-eryri-national-park-snowdonia-2026-10-05@stellarhound.
 com
DTSTAMP:20260719T000000Z
DTSTART;VALUE=DATE:20261005
DTEND;VALUE=DATE:20261018
SUMMARY:Dark-sky window · 13 moon-free nights
DESCRIPTION:13 nights with essentially moon-free dark hours at Eryri Nation
 al Park (Snowdonia) (nightly moon interference ≤ 15% — Moon below the 
 horizon for nearly all of astronomical darkness\, or too thin to matter).\
 n\nCloud is the one thing no calendar can promise. When a window gets clos
 e\, check the live per-night forecast: https://stellarhound.com/dark-sites
 /eryri-national-park-snowdonia?utm_source=calendar&utm_medium=ics&utm_camp
 aign=dark-site-windows&utm_content=eryri-national-park-snowdonia\n\nRule c
 ity-ics-v1 — deterministic moon/darkness geometry\, Skyfield + JPL DE440
 s. Not a weather forecast.
URL:https://stellarhound.com/dark-sites/eryri-national-park-snowdonia?utm_s
 ource=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_content=e
 ryri-national-park-snowdonia
CATEGORIES:dark-sky-window
STATUS:CONFIRMED
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:dark-site-window-eryri-national-park-snowdonia-2026-11-03@stellarhound.
 com
DTSTAMP:20260719T000000Z
DTSTART;VALUE=DATE:20261103
DTEND;VALUE=DATE:20261116
SUMMARY:Dark-sky window · 13 moon-free nights
DESCRIPTION:13 nights with essentially moon-free dark hours at Eryri Nation
 al Park (Snowdonia) (nightly moon interference ≤ 15% — Moon below the 
 horizon for nearly all of astronomical darkness\, or too thin to matter).\
 n\nCloud is the one thing no calendar can promise. When a window gets clos
 e\, check the live per-night forecast: https://stellarhound.com/dark-sites
 /eryri-national-park-snowdonia?utm_source=calendar&utm_medium=ics&utm_camp
 aign=dark-site-windows&utm_content=eryri-national-park-snowdonia\n\nRule c
 ity-ics-v1 — deterministic moon/darkness geometry\, Skyfield + JPL DE440
 s. Not a weather forecast.
URL:https://stellarhound.com/dark-sites/eryri-national-park-snowdonia?utm_s
 ource=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_content=e
 ryri-national-park-snowdonia
CATEGORIES:dark-sky-window
STATUS:CONFIRMED
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:dark-site-window-eryri-national-park-snowdonia-2026-12-02@stellarhound.
 com
DTSTAMP:20260719T000000Z
DTSTART;VALUE=DATE:20261202
DTEND;VALUE=DATE:20261216
SUMMARY:Dark-sky window · 14 moon-free nights
DESCRIPTION:14 nights with essentially moon-free dark hours at Eryri Nation
 al Park (Snowdonia) (nightly moon interference ≤ 15% — Moon below the 
 horizon for nearly all of astronomical darkness\, or too thin to matter).\
 n\nCloud is the one thing no calendar can promise. When a window gets clos
 e\, check the live per-night forecast: https://stellarhound.com/dark-sites
 /eryri-national-park-snowdonia?utm_source=calendar&utm_medium=ics&utm_camp
 aign=dark-site-windows&utm_content=eryri-national-park-snowdonia\n\nRule c
 ity-ics-v1 — deterministic moon/darkness geometry\, Skyfield + JPL DE440
 s. Not a weather forecast.
URL:https://stellarhound.com/dark-sites/eryri-national-park-snowdonia?utm_s
 ource=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_content=e
 ryri-national-park-snowdonia
CATEGORIES:dark-sky-window
STATUS:CONFIRMED
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:dark-site-window-eryri-national-park-snowdonia-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 Eryri Nation
 al Park (Snowdonia) (nightly moon interference ≤ 15% — Moon below the 
 horizon for nearly all of astronomical darkness\, or too thin to matter).\
 n\nCloud is the one thing no calendar can promise. When a window gets clos
 e\, check the live per-night forecast: https://stellarhound.com/dark-sites
 /eryri-national-park-snowdonia?utm_source=calendar&utm_medium=ics&utm_camp
 aign=dark-site-windows&utm_content=eryri-national-park-snowdonia\n\nRule c
 ity-ics-v1 — deterministic moon/darkness geometry\, Skyfield + JPL DE440
 s. Not a weather forecast.
URL:https://stellarhound.com/dark-sites/eryri-national-park-snowdonia?utm_s
 ource=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_content=e
 ryri-national-park-snowdonia
CATEGORIES:dark-sky-window
STATUS:CONFIRMED
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:dark-site-window-eryri-national-park-snowdonia-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 Eryri Nation
 al Park (Snowdonia) (nightly moon interference ≤ 15% — Moon below the 
 horizon for nearly all of astronomical darkness\, or too thin to matter).\
 n\nCloud is the one thing no calendar can promise. When a window gets clos
 e\, check the live per-night forecast: https://stellarhound.com/dark-sites
 /eryri-national-park-snowdonia?utm_source=calendar&utm_medium=ics&utm_camp
 aign=dark-site-windows&utm_content=eryri-national-park-snowdonia\n\nRule c
 ity-ics-v1 — deterministic moon/darkness geometry\, Skyfield + JPL DE440
 s. Not a weather forecast.
URL:https://stellarhound.com/dark-sites/eryri-national-park-snowdonia?utm_s
 ource=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_content=e
 ryri-national-park-snowdonia
CATEGORIES:dark-sky-window
STATUS:CONFIRMED
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:dark-site-window-eryri-national-park-snowdonia-2027-02-27@stellarhound.
 com
DTSTAMP:20260719T000000Z
DTSTART;VALUE=DATE:20270227
DTEND;VALUE=DATE:20270313
SUMMARY:Dark-sky window · 14 moon-free nights
DESCRIPTION:14 nights with essentially moon-free dark hours at Eryri Nation
 al Park (Snowdonia) (nightly moon interference ≤ 15% — Moon below the 
 horizon for nearly all of astronomical darkness\, or too thin to matter).\
 n\nCloud is the one thing no calendar can promise. When a window gets clos
 e\, check the live per-night forecast: https://stellarhound.com/dark-sites
 /eryri-national-park-snowdonia?utm_source=calendar&utm_medium=ics&utm_camp
 aign=dark-site-windows&utm_content=eryri-national-park-snowdonia\n\nRule c
 ity-ics-v1 — deterministic moon/darkness geometry\, Skyfield + JPL DE440
 s. Not a weather forecast.
URL:https://stellarhound.com/dark-sites/eryri-national-park-snowdonia?utm_s
 ource=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_content=e
 ryri-national-park-snowdonia
CATEGORIES:dark-sky-window
STATUS:CONFIRMED
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:dark-site-window-eryri-national-park-snowdonia-2027-03-28@stellarhound.
 com
DTSTAMP:20260719T000000Z
DTSTART;VALUE=DATE:20270328
DTEND;VALUE=DATE:20270411
SUMMARY:Dark-sky window · 14 moon-free nights
DESCRIPTION:14 nights with essentially moon-free dark hours at Eryri Nation
 al Park (Snowdonia) (nightly moon interference ≤ 15% — Moon below the 
 horizon for nearly all of astronomical darkness\, or too thin to matter).\
 n\nCloud is the one thing no calendar can promise. When a window gets clos
 e\, check the live per-night forecast: https://stellarhound.com/dark-sites
 /eryri-national-park-snowdonia?utm_source=calendar&utm_medium=ics&utm_camp
 aign=dark-site-windows&utm_content=eryri-national-park-snowdonia\n\nRule c
 ity-ics-v1 — deterministic moon/darkness geometry\, Skyfield + JPL DE440
 s. Not a weather forecast.
URL:https://stellarhound.com/dark-sites/eryri-national-park-snowdonia?utm_s
 ource=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_content=e
 ryri-national-park-snowdonia
CATEGORIES:dark-sky-window
STATUS:CONFIRMED
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:dark-site-window-eryri-national-park-snowdonia-2027-04-26@stellarhound.
 com
DTSTAMP:20260719T000000Z
DTSTART;VALUE=DATE:20270426
DTEND;VALUE=DATE:20270510
SUMMARY:Dark-sky window · 14 moon-free nights
DESCRIPTION:14 nights with essentially moon-free dark hours at Eryri Nation
 al Park (Snowdonia) (nightly moon interference ≤ 15% — Moon below the 
 horizon for nearly all of astronomical darkness\, or too thin to matter).\
 n\nCloud is the one thing no calendar can promise. When a window gets clos
 e\, check the live per-night forecast: https://stellarhound.com/dark-sites
 /eryri-national-park-snowdonia?utm_source=calendar&utm_medium=ics&utm_camp
 aign=dark-site-windows&utm_content=eryri-national-park-snowdonia\n\nRule c
 ity-ics-v1 — deterministic moon/darkness geometry\, Skyfield + JPL DE440
 s. Not a weather forecast.
URL:https://stellarhound.com/dark-sites/eryri-national-park-snowdonia?utm_s
 ource=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_content=e
 ryri-national-park-snowdonia
CATEGORIES:dark-sky-window
STATUS:CONFIRMED
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:dark-site-window-eryri-national-park-snowdonia-2027-05-28@stellarhound.
 com
DTSTAMP:20260719T000000Z
DTSTART;VALUE=DATE:20270528
DTEND;VALUE=DATE:20270610
SUMMARY:Dark-sky window · 13 moon-free nights
DESCRIPTION:13 nights with essentially moon-free dark hours at Eryri Nation
 al Park (Snowdonia) (nightly moon interference ≤ 15% — Moon below the 
 horizon for nearly all of astronomical darkness\, or too thin to matter).\
 n\nCloud is the one thing no calendar can promise. When a window gets clos
 e\, check the live per-night forecast: https://stellarhound.com/dark-sites
 /eryri-national-park-snowdonia?utm_source=calendar&utm_medium=ics&utm_camp
 aign=dark-site-windows&utm_content=eryri-national-park-snowdonia\n\nRule c
 ity-ics-v1 — deterministic moon/darkness geometry\, Skyfield + JPL DE440
 s. Not a weather forecast.
URL:https://stellarhound.com/dark-sites/eryri-national-park-snowdonia?utm_s
 ource=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_content=e
 ryri-national-park-snowdonia
CATEGORIES:dark-sky-window
STATUS:CONFIRMED
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:dark-site-window-eryri-national-park-snowdonia-2027-06-29@stellarhound.
 com
DTSTAMP:20260719T000000Z
DTSTART;VALUE=DATE:20270629
DTEND;VALUE=DATE:20270712
SUMMARY:Dark-sky window · 13 moon-free nights
DESCRIPTION:13 nights with essentially moon-free dark hours at Eryri Nation
 al Park (Snowdonia) (nightly moon interference ≤ 15% — Moon below the 
 horizon for nearly all of astronomical darkness\, or too thin to matter).\
 n\nCloud is the one thing no calendar can promise. When a window gets clos
 e\, check the live per-night forecast: https://stellarhound.com/dark-sites
 /eryri-national-park-snowdonia?utm_source=calendar&utm_medium=ics&utm_camp
 aign=dark-site-windows&utm_content=eryri-national-park-snowdonia\n\nRule c
 ity-ics-v1 — deterministic moon/darkness geometry\, Skyfield + JPL DE440
 s. Not a weather forecast.
URL:https://stellarhound.com/dark-sites/eryri-national-park-snowdonia?utm_s
 ource=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_content=e
 ryri-national-park-snowdonia
CATEGORIES:dark-sky-window
STATUS:CONFIRMED
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:dark-site-window-eryri-national-park-snowdonia-2027-07-29@stellarhound.
 com
DTSTAMP:20260719T000000Z
DTSTART;VALUE=DATE:20270729
DTEND;VALUE=DATE:20270811
SUMMARY:Dark-sky window · 13 moon-free nights
DESCRIPTION:13 nights with essentially moon-free dark hours at Eryri Nation
 al Park (Snowdonia) (nightly moon interference ≤ 15% — Moon below the 
 horizon for nearly all of astronomical darkness\, or too thin to matter).\
 n\nCloud is the one thing no calendar can promise. When a window gets clos
 e\, check the live per-night forecast: https://stellarhound.com/dark-sites
 /eryri-national-park-snowdonia?utm_source=calendar&utm_medium=ics&utm_camp
 aign=dark-site-windows&utm_content=eryri-national-park-snowdonia\n\nRule c
 ity-ics-v1 — deterministic moon/darkness geometry\, Skyfield + JPL DE440
 s. Not a weather forecast.
URL:https://stellarhound.com/dark-sites/eryri-national-park-snowdonia?utm_s
 ource=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_content=e
 ryri-national-park-snowdonia
CATEGORIES:dark-sky-window
STATUS:CONFIRMED
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:dark-site-window-eryri-national-park-snowdonia-2027-08-27@stellarhound.
 com
DTSTAMP:20260719T000000Z
DTSTART;VALUE=DATE:20270827
DTEND;VALUE=DATE:20270909
SUMMARY:Dark-sky window · 13 moon-free nights
DESCRIPTION:13 nights with essentially moon-free dark hours at Eryri Nation
 al Park (Snowdonia) (nightly moon interference ≤ 15% — Moon below the 
 horizon for nearly all of astronomical darkness\, or too thin to matter).\
 n\nCloud is the one thing no calendar can promise. When a window gets clos
 e\, check the live per-night forecast: https://stellarhound.com/dark-sites
 /eryri-national-park-snowdonia?utm_source=calendar&utm_medium=ics&utm_camp
 aign=dark-site-windows&utm_content=eryri-national-park-snowdonia\n\nRule c
 ity-ics-v1 — deterministic moon/darkness geometry\, Skyfield + JPL DE440
 s. Not a weather forecast.
URL:https://stellarhound.com/dark-sites/eryri-national-park-snowdonia?utm_s
 ource=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_content=e
 ryri-national-park-snowdonia
CATEGORIES:dark-sky-window
STATUS:CONFIRMED
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:dark-site-window-eryri-national-park-snowdonia-2027-09-25@stellarhound.
 com
DTSTAMP:20260719T000000Z
DTSTART;VALUE=DATE:20270925
DTEND;VALUE=DATE:20271007
SUMMARY:Dark-sky window · 12 moon-free nights
DESCRIPTION:12 nights with essentially moon-free dark hours at Eryri Nation
 al Park (Snowdonia) (nightly moon interference ≤ 15% — Moon below the 
 horizon for nearly all of astronomical darkness\, or too thin to matter).\
 n\nCloud is the one thing no calendar can promise. When a window gets clos
 e\, check the live per-night forecast: https://stellarhound.com/dark-sites
 /eryri-national-park-snowdonia?utm_source=calendar&utm_medium=ics&utm_camp
 aign=dark-site-windows&utm_content=eryri-national-park-snowdonia\n\nRule c
 ity-ics-v1 — deterministic moon/darkness geometry\, Skyfield + JPL DE440
 s. Not a weather forecast.
URL:https://stellarhound.com/dark-sites/eryri-national-park-snowdonia?utm_s
 ource=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_content=e
 ryri-national-park-snowdonia
CATEGORIES:dark-sky-window
STATUS:CONFIRMED
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:dark-site-window-eryri-national-park-snowdonia-2027-10-24@stellarhound.
 com
DTSTAMP:20260719T000000Z
DTSTART;VALUE=DATE:20271024
DTEND;VALUE=DATE:20271105
SUMMARY:Dark-sky window · 12 moon-free nights
DESCRIPTION:12 nights with essentially moon-free dark hours at Eryri Nation
 al Park (Snowdonia) (nightly moon interference ≤ 15% — Moon below the 
 horizon for nearly all of astronomical darkness\, or too thin to matter).\
 n\nCloud is the one thing no calendar can promise. When a window gets clos
 e\, check the live per-night forecast: https://stellarhound.com/dark-sites
 /eryri-national-park-snowdonia?utm_source=calendar&utm_medium=ics&utm_camp
 aign=dark-site-windows&utm_content=eryri-national-park-snowdonia\n\nRule c
 ity-ics-v1 — deterministic moon/darkness geometry\, Skyfield + JPL DE440
 s. Not a weather forecast.
URL:https://stellarhound.com/dark-sites/eryri-national-park-snowdonia?utm_s
 ource=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_content=e
 ryri-national-park-snowdonia
CATEGORIES:dark-sky-window
STATUS:CONFIRMED
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:dark-site-window-eryri-national-park-snowdonia-2027-11-22@stellarhound.
 com
DTSTAMP:20260719T000000Z
DTSTART;VALUE=DATE:20271122
DTEND;VALUE=DATE:20271205
SUMMARY:Dark-sky window · 13 moon-free nights
DESCRIPTION:13 nights with essentially moon-free dark hours at Eryri Nation
 al Park (Snowdonia) (nightly moon interference ≤ 15% — Moon below the 
 horizon for nearly all of astronomical darkness\, or too thin to matter).\
 n\nCloud is the one thing no calendar can promise. When a window gets clos
 e\, check the live per-night forecast: https://stellarhound.com/dark-sites
 /eryri-national-park-snowdonia?utm_source=calendar&utm_medium=ics&utm_camp
 aign=dark-site-windows&utm_content=eryri-national-park-snowdonia\n\nRule c
 ity-ics-v1 — deterministic moon/darkness geometry\, Skyfield + JPL DE440
 s. Not a weather forecast.
URL:https://stellarhound.com/dark-sites/eryri-national-park-snowdonia?utm_s
 ource=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_content=e
 ryri-national-park-snowdonia
CATEGORIES:dark-sky-window
STATUS:CONFIRMED
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:dark-site-window-eryri-national-park-snowdonia-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 Eryri Nation
 al Park (Snowdonia) (nightly moon interference ≤ 15% — Moon below the 
 horizon for nearly all of astronomical darkness\, or too thin to matter).\
 n\nCloud is the one thing no calendar can promise. When a window gets clos
 e\, check the live per-night forecast: https://stellarhound.com/dark-sites
 /eryri-national-park-snowdonia?utm_source=calendar&utm_medium=ics&utm_camp
 aign=dark-site-windows&utm_content=eryri-national-park-snowdonia\n\nRule c
 ity-ics-v1 — deterministic moon/darkness geometry\, Skyfield + JPL DE440
 s. Not a weather forecast.
URL:https://stellarhound.com/dark-sites/eryri-national-park-snowdonia?utm_s
 ource=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_content=e
 ryri-national-park-snowdonia
CATEGORIES:dark-sky-window
STATUS:CONFIRMED
TRANSP:TRANSPARENT
END:VEVENT
END:VCALENDAR