BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Stellarhound//city-ics-v1//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME:Stellarhound — Valle de Oro National Wildlife Refuge dark-sk
 y nights
X-WR-CALDESC:Nights when the Moon leaves Valle de Oro National Wildlife Ref
 uge's dark hours essentially moon-free (moon interference ≤ 15%\, the de
 ep-sky standard used across stellarhound.com). Deterministic moon & darkne
 ss geometry via Skyfield + JPL DE440s (city-ics-v1). Cloud cover is not kn
 owable this far ahead — check the live forecast at https://stellarhound.
 com/dark-sites/valle-de-oro-national-wildlife-refuge?utm_source=calendar&u
 tm_medium=ics&utm_campaign=dark-site-windows&utm_content=valle-de-oro-nati
 onal-wildlife-refuge closer to each window.
REFRESH-INTERVAL;VALUE=DURATION:P1W
X-PUBLISHED-TTL:P1W
BEGIN:VEVENT
UID:dark-site-window-valle-de-oro-national-wildlife-refuge-2026-08-07@stell
 arhound.com
DTSTAMP:20260719T000000Z
DTSTART;VALUE=DATE:20260807
DTEND;VALUE=DATE:20260819
SUMMARY:Dark-sky window · 12 moon-free nights
DESCRIPTION:12 nights with essentially moon-free dark hours at Valle de Oro
  National Wildlife Refuge (nightly moon interference ≤ 15% — Moon belo
 w the horizon for nearly all of astronomical darkness\, or too thin to mat
 ter).\n\nCloud is the one thing no calendar can promise. When a window get
 s close\, check the live per-night forecast: https://stellarhound.com/dark
 -sites/valle-de-oro-national-wildlife-refuge?utm_source=calendar&utm_mediu
 m=ics&utm_campaign=dark-site-windows&utm_content=valle-de-oro-national-wil
 dlife-refuge\n\nRule city-ics-v1 — deterministic moon/darkness geometry\
 , Skyfield + JPL DE440s. Not a weather forecast.
URL:https://stellarhound.com/dark-sites/valle-de-oro-national-wildlife-refu
 ge?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_c
 ontent=valle-de-oro-national-wildlife-refuge
CATEGORIES:dark-sky-window
STATUS:CONFIRMED
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:dark-site-window-valle-de-oro-national-wildlife-refuge-2026-09-05@stell
 arhound.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 Valle de Oro
  National Wildlife Refuge (nightly moon interference ≤ 15% — Moon belo
 w the horizon for nearly all of astronomical darkness\, or too thin to mat
 ter).\n\nCloud is the one thing no calendar can promise. When a window get
 s close\, check the live per-night forecast: https://stellarhound.com/dark
 -sites/valle-de-oro-national-wildlife-refuge?utm_source=calendar&utm_mediu
 m=ics&utm_campaign=dark-site-windows&utm_content=valle-de-oro-national-wil
 dlife-refuge\n\nRule city-ics-v1 — deterministic moon/darkness geometry\
 , Skyfield + JPL DE440s. Not a weather forecast.
URL:https://stellarhound.com/dark-sites/valle-de-oro-national-wildlife-refu
 ge?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_c
 ontent=valle-de-oro-national-wildlife-refuge
CATEGORIES:dark-sky-window
STATUS:CONFIRMED
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:dark-site-window-valle-de-oro-national-wildlife-refuge-2026-10-04@stell
 arhound.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 Valle de Oro
  National Wildlife Refuge (nightly moon interference ≤ 15% — Moon belo
 w the horizon for nearly all of astronomical darkness\, or too thin to mat
 ter).\n\nCloud is the one thing no calendar can promise. When a window get
 s close\, check the live per-night forecast: https://stellarhound.com/dark
 -sites/valle-de-oro-national-wildlife-refuge?utm_source=calendar&utm_mediu
 m=ics&utm_campaign=dark-site-windows&utm_content=valle-de-oro-national-wil
 dlife-refuge\n\nRule city-ics-v1 — deterministic moon/darkness geometry\
 , Skyfield + JPL DE440s. Not a weather forecast.
URL:https://stellarhound.com/dark-sites/valle-de-oro-national-wildlife-refu
 ge?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_c
 ontent=valle-de-oro-national-wildlife-refuge
CATEGORIES:dark-sky-window
STATUS:CONFIRMED
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:dark-site-window-valle-de-oro-national-wildlife-refuge-2026-11-02@stell
 arhound.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 Valle de Oro
  National Wildlife Refuge (nightly moon interference ≤ 15% — Moon belo
 w the horizon for nearly all of astronomical darkness\, or too thin to mat
 ter).\n\nCloud is the one thing no calendar can promise. When a window get
 s close\, check the live per-night forecast: https://stellarhound.com/dark
 -sites/valle-de-oro-national-wildlife-refuge?utm_source=calendar&utm_mediu
 m=ics&utm_campaign=dark-site-windows&utm_content=valle-de-oro-national-wil
 dlife-refuge\n\nRule city-ics-v1 — deterministic moon/darkness geometry\
 , Skyfield + JPL DE440s. Not a weather forecast.
URL:https://stellarhound.com/dark-sites/valle-de-oro-national-wildlife-refu
 ge?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_c
 ontent=valle-de-oro-national-wildlife-refuge
CATEGORIES:dark-sky-window
STATUS:CONFIRMED
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:dark-site-window-valle-de-oro-national-wildlife-refuge-2026-12-02@stell
 arhound.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 Valle de Oro
  National Wildlife Refuge (nightly moon interference ≤ 15% — Moon belo
 w the horizon for nearly all of astronomical darkness\, or too thin to mat
 ter).\n\nCloud is the one thing no calendar can promise. When a window get
 s close\, check the live per-night forecast: https://stellarhound.com/dark
 -sites/valle-de-oro-national-wildlife-refuge?utm_source=calendar&utm_mediu
 m=ics&utm_campaign=dark-site-windows&utm_content=valle-de-oro-national-wil
 dlife-refuge\n\nRule city-ics-v1 — deterministic moon/darkness geometry\
 , Skyfield + JPL DE440s. Not a weather forecast.
URL:https://stellarhound.com/dark-sites/valle-de-oro-national-wildlife-refu
 ge?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_c
 ontent=valle-de-oro-national-wildlife-refuge
CATEGORIES:dark-sky-window
STATUS:CONFIRMED
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:dark-site-window-valle-de-oro-national-wildlife-refuge-2026-12-31@stell
 arhound.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 Valle de Oro
  National Wildlife Refuge (nightly moon interference ≤ 15% — Moon belo
 w the horizon for nearly all of astronomical darkness\, or too thin to mat
 ter).\n\nCloud is the one thing no calendar can promise. When a window get
 s close\, check the live per-night forecast: https://stellarhound.com/dark
 -sites/valle-de-oro-national-wildlife-refuge?utm_source=calendar&utm_mediu
 m=ics&utm_campaign=dark-site-windows&utm_content=valle-de-oro-national-wil
 dlife-refuge\n\nRule city-ics-v1 — deterministic moon/darkness geometry\
 , Skyfield + JPL DE440s. Not a weather forecast.
URL:https://stellarhound.com/dark-sites/valle-de-oro-national-wildlife-refu
 ge?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_c
 ontent=valle-de-oro-national-wildlife-refuge
CATEGORIES:dark-sky-window
STATUS:CONFIRMED
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:dark-site-window-valle-de-oro-national-wildlife-refuge-2027-01-30@stell
 arhound.com
DTSTAMP:20260719T000000Z
DTSTART;VALUE=DATE:20270130
DTEND;VALUE=DATE:20270212
SUMMARY:Dark-sky window · 13 moon-free nights
DESCRIPTION:13 nights with essentially moon-free dark hours at Valle de Oro
  National Wildlife Refuge (nightly moon interference ≤ 15% — Moon belo
 w the horizon for nearly all of astronomical darkness\, or too thin to mat
 ter).\n\nCloud is the one thing no calendar can promise. When a window get
 s close\, check the live per-night forecast: https://stellarhound.com/dark
 -sites/valle-de-oro-national-wildlife-refuge?utm_source=calendar&utm_mediu
 m=ics&utm_campaign=dark-site-windows&utm_content=valle-de-oro-national-wil
 dlife-refuge\n\nRule city-ics-v1 — deterministic moon/darkness geometry\
 , Skyfield + JPL DE440s. Not a weather forecast.
URL:https://stellarhound.com/dark-sites/valle-de-oro-national-wildlife-refu
 ge?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_c
 ontent=valle-de-oro-national-wildlife-refuge
CATEGORIES:dark-sky-window
STATUS:CONFIRMED
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:dark-site-window-valle-de-oro-national-wildlife-refuge-2027-02-28@stell
 arhound.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 Valle de Oro
  National Wildlife Refuge (nightly moon interference ≤ 15% — Moon belo
 w the horizon for nearly all of astronomical darkness\, or too thin to mat
 ter).\n\nCloud is the one thing no calendar can promise. When a window get
 s close\, check the live per-night forecast: https://stellarhound.com/dark
 -sites/valle-de-oro-national-wildlife-refuge?utm_source=calendar&utm_mediu
 m=ics&utm_campaign=dark-site-windows&utm_content=valle-de-oro-national-wil
 dlife-refuge\n\nRule city-ics-v1 — deterministic moon/darkness geometry\
 , Skyfield + JPL DE440s. Not a weather forecast.
URL:https://stellarhound.com/dark-sites/valle-de-oro-national-wildlife-refu
 ge?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_c
 ontent=valle-de-oro-national-wildlife-refuge
CATEGORIES:dark-sky-window
STATUS:CONFIRMED
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:dark-site-window-valle-de-oro-national-wildlife-refuge-2027-03-29@stell
 arhound.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 Valle de Oro
  National Wildlife Refuge (nightly moon interference ≤ 15% — Moon belo
 w the horizon for nearly all of astronomical darkness\, or too thin to mat
 ter).\n\nCloud is the one thing no calendar can promise. When a window get
 s close\, check the live per-night forecast: https://stellarhound.com/dark
 -sites/valle-de-oro-national-wildlife-refuge?utm_source=calendar&utm_mediu
 m=ics&utm_campaign=dark-site-windows&utm_content=valle-de-oro-national-wil
 dlife-refuge\n\nRule city-ics-v1 — deterministic moon/darkness geometry\
 , Skyfield + JPL DE440s. Not a weather forecast.
URL:https://stellarhound.com/dark-sites/valle-de-oro-national-wildlife-refu
 ge?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_c
 ontent=valle-de-oro-national-wildlife-refuge
CATEGORIES:dark-sky-window
STATUS:CONFIRMED
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:dark-site-window-valle-de-oro-national-wildlife-refuge-2027-04-28@stell
 arhound.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 Valle de Oro
  National Wildlife Refuge (nightly moon interference ≤ 15% — Moon belo
 w the horizon for nearly all of astronomical darkness\, or too thin to mat
 ter).\n\nCloud is the one thing no calendar can promise. When a window get
 s close\, check the live per-night forecast: https://stellarhound.com/dark
 -sites/valle-de-oro-national-wildlife-refuge?utm_source=calendar&utm_mediu
 m=ics&utm_campaign=dark-site-windows&utm_content=valle-de-oro-national-wil
 dlife-refuge\n\nRule city-ics-v1 — deterministic moon/darkness geometry\
 , Skyfield + JPL DE440s. Not a weather forecast.
URL:https://stellarhound.com/dark-sites/valle-de-oro-national-wildlife-refu
 ge?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_c
 ontent=valle-de-oro-national-wildlife-refuge
CATEGORIES:dark-sky-window
STATUS:CONFIRMED
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:dark-site-window-valle-de-oro-national-wildlife-refuge-2027-05-29@stell
 arhound.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 Valle de Oro
  National Wildlife Refuge (nightly moon interference ≤ 15% — Moon belo
 w the horizon for nearly all of astronomical darkness\, or too thin to mat
 ter).\n\nCloud is the one thing no calendar can promise. When a window get
 s close\, check the live per-night forecast: https://stellarhound.com/dark
 -sites/valle-de-oro-national-wildlife-refuge?utm_source=calendar&utm_mediu
 m=ics&utm_campaign=dark-site-windows&utm_content=valle-de-oro-national-wil
 dlife-refuge\n\nRule city-ics-v1 — deterministic moon/darkness geometry\
 , Skyfield + JPL DE440s. Not a weather forecast.
URL:https://stellarhound.com/dark-sites/valle-de-oro-national-wildlife-refu
 ge?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_c
 ontent=valle-de-oro-national-wildlife-refuge
CATEGORIES:dark-sky-window
STATUS:CONFIRMED
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:dark-site-window-valle-de-oro-national-wildlife-refuge-2027-06-28@stell
 arhound.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 Valle de Oro
  National Wildlife Refuge (nightly moon interference ≤ 15% — Moon belo
 w the horizon for nearly all of astronomical darkness\, or too thin to mat
 ter).\n\nCloud is the one thing no calendar can promise. When a window get
 s close\, check the live per-night forecast: https://stellarhound.com/dark
 -sites/valle-de-oro-national-wildlife-refuge?utm_source=calendar&utm_mediu
 m=ics&utm_campaign=dark-site-windows&utm_content=valle-de-oro-national-wil
 dlife-refuge\n\nRule city-ics-v1 — deterministic moon/darkness geometry\
 , Skyfield + JPL DE440s. Not a weather forecast.
URL:https://stellarhound.com/dark-sites/valle-de-oro-national-wildlife-refu
 ge?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_c
 ontent=valle-de-oro-national-wildlife-refuge
CATEGORIES:dark-sky-window
STATUS:CONFIRMED
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:dark-site-window-valle-de-oro-national-wildlife-refuge-2027-07-28@stell
 arhound.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 Valle de Oro
  National Wildlife Refuge (nightly moon interference ≤ 15% — Moon belo
 w the horizon for nearly all of astronomical darkness\, or too thin to mat
 ter).\n\nCloud is the one thing no calendar can promise. When a window get
 s close\, check the live per-night forecast: https://stellarhound.com/dark
 -sites/valle-de-oro-national-wildlife-refuge?utm_source=calendar&utm_mediu
 m=ics&utm_campaign=dark-site-windows&utm_content=valle-de-oro-national-wil
 dlife-refuge\n\nRule city-ics-v1 — deterministic moon/darkness geometry\
 , Skyfield + JPL DE440s. Not a weather forecast.
URL:https://stellarhound.com/dark-sites/valle-de-oro-national-wildlife-refu
 ge?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_c
 ontent=valle-de-oro-national-wildlife-refuge
CATEGORIES:dark-sky-window
STATUS:CONFIRMED
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:dark-site-window-valle-de-oro-national-wildlife-refuge-2027-08-26@stell
 arhound.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 Valle de Oro
  National Wildlife Refuge (nightly moon interference ≤ 15% — Moon belo
 w the horizon for nearly all of astronomical darkness\, or too thin to mat
 ter).\n\nCloud is the one thing no calendar can promise. When a window get
 s close\, check the live per-night forecast: https://stellarhound.com/dark
 -sites/valle-de-oro-national-wildlife-refuge?utm_source=calendar&utm_mediu
 m=ics&utm_campaign=dark-site-windows&utm_content=valle-de-oro-national-wil
 dlife-refuge\n\nRule city-ics-v1 — deterministic moon/darkness geometry\
 , Skyfield + JPL DE440s. Not a weather forecast.
URL:https://stellarhound.com/dark-sites/valle-de-oro-national-wildlife-refu
 ge?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_c
 ontent=valle-de-oro-national-wildlife-refuge
CATEGORIES:dark-sky-window
STATUS:CONFIRMED
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:dark-site-window-valle-de-oro-national-wildlife-refuge-2027-09-24@stell
 arhound.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 Valle de Oro
  National Wildlife Refuge (nightly moon interference ≤ 15% — Moon belo
 w the horizon for nearly all of astronomical darkness\, or too thin to mat
 ter).\n\nCloud is the one thing no calendar can promise. When a window get
 s close\, check the live per-night forecast: https://stellarhound.com/dark
 -sites/valle-de-oro-national-wildlife-refuge?utm_source=calendar&utm_mediu
 m=ics&utm_campaign=dark-site-windows&utm_content=valle-de-oro-national-wil
 dlife-refuge\n\nRule city-ics-v1 — deterministic moon/darkness geometry\
 , Skyfield + JPL DE440s. Not a weather forecast.
URL:https://stellarhound.com/dark-sites/valle-de-oro-national-wildlife-refu
 ge?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_c
 ontent=valle-de-oro-national-wildlife-refuge
CATEGORIES:dark-sky-window
STATUS:CONFIRMED
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:dark-site-window-valle-de-oro-national-wildlife-refuge-2027-10-23@stell
 arhound.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 Valle de Oro
  National Wildlife Refuge (nightly moon interference ≤ 15% — Moon belo
 w the horizon for nearly all of astronomical darkness\, or too thin to mat
 ter).\n\nCloud is the one thing no calendar can promise. When a window get
 s close\, check the live per-night forecast: https://stellarhound.com/dark
 -sites/valle-de-oro-national-wildlife-refuge?utm_source=calendar&utm_mediu
 m=ics&utm_campaign=dark-site-windows&utm_content=valle-de-oro-national-wil
 dlife-refuge\n\nRule city-ics-v1 — deterministic moon/darkness geometry\
 , Skyfield + JPL DE440s. Not a weather forecast.
URL:https://stellarhound.com/dark-sites/valle-de-oro-national-wildlife-refu
 ge?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_c
 ontent=valle-de-oro-national-wildlife-refuge
CATEGORIES:dark-sky-window
STATUS:CONFIRMED
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:dark-site-window-valle-de-oro-national-wildlife-refuge-2027-11-21@stell
 arhound.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 Valle de Oro
  National Wildlife Refuge (nightly moon interference ≤ 15% — Moon belo
 w the horizon for nearly all of astronomical darkness\, or too thin to mat
 ter).\n\nCloud is the one thing no calendar can promise. When a window get
 s close\, check the live per-night forecast: https://stellarhound.com/dark
 -sites/valle-de-oro-national-wildlife-refuge?utm_source=calendar&utm_mediu
 m=ics&utm_campaign=dark-site-windows&utm_content=valle-de-oro-national-wil
 dlife-refuge\n\nRule city-ics-v1 — deterministic moon/darkness geometry\
 , Skyfield + JPL DE440s. Not a weather forecast.
URL:https://stellarhound.com/dark-sites/valle-de-oro-national-wildlife-refu
 ge?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_c
 ontent=valle-de-oro-national-wildlife-refuge
CATEGORIES:dark-sky-window
STATUS:CONFIRMED
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:dark-site-window-valle-de-oro-national-wildlife-refuge-2027-12-21@stell
 arhound.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 Valle de Oro
  National Wildlife Refuge (nightly moon interference ≤ 15% — Moon belo
 w the horizon for nearly all of astronomical darkness\, or too thin to mat
 ter).\n\nCloud is the one thing no calendar can promise. When a window get
 s close\, check the live per-night forecast: https://stellarhound.com/dark
 -sites/valle-de-oro-national-wildlife-refuge?utm_source=calendar&utm_mediu
 m=ics&utm_campaign=dark-site-windows&utm_content=valle-de-oro-national-wil
 dlife-refuge\n\nRule city-ics-v1 — deterministic moon/darkness geometry\
 , Skyfield + JPL DE440s. Not a weather forecast.
URL:https://stellarhound.com/dark-sites/valle-de-oro-national-wildlife-refu
 ge?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_c
 ontent=valle-de-oro-national-wildlife-refuge
CATEGORIES:dark-sky-window
STATUS:CONFIRMED
TRANSP:TRANSPARENT
END:VEVENT
END:VCALENDAR