roque-nights.netlify.app
Roque Nights is an agent-native observing planner for the night sky. It computes darkness, Moon interference and 110 Messier objects entirely in your browser, and hands your AI agent 14 WebMCP site…
First seen 2026-11-05 · Last seen 2026-11-05 · Source: webmcp.com
Answer 4 · Act 8 · Transact 0 · Score: Not yet scored
Tool inspector
rank_nights
Use this to find the BEST ASTRONOMICAL NIGHT in a date range instead of calling get_night_ephemeris in a loop. Scores every night in the range (inclusive, up to 62 nights) by USABLE dark hours: astronomical darkness while the Moon is below the horizon or thinner than 15% illuminated. Astronomy only: darkness and Moon. It does not know the weather; for cloud cover use compare_dark_sky_sites. Returns nights sorted best-first with score (0-100), dark hours, Moon-free hours, Moon illumination and a one-line explanation. Honours cancellation. Read-only: it does not move the app. To put the app on the night you picked, call set_observing_time with { "date": }. from_date and to_date are both required and both name the EVENING a night starts; a two-night range is fine when the person is only choosing between, say, Friday and Saturday ({ "from_date": "2026-09-04", "to_date": "2026-09-05" }).
Input schema
| Property | Type | Required | Description |
|---|---|---|---|
from_date |
string | yes | First evening of the range, YYYY-MM-DD (inclusive). |
to_date |
string | yes | Last evening of the range, YYYY-MM-DD (inclusive). At most 62 nights from from_date. |
site |
object | no | Observing site to compute for. Omit to use the site currently shown in the app. Otherwise name a dark-sky catalog site with id (preferred) or name, OR pass BOTH latitude and longitude, plus time_zone (IANA, e.g. "Pacific/Honolulu") if you want local times; without a zone only UTC is returned. An object that does neither comes back as invalid_site with a hint. Answering for a site here does NOT move the app: to change the site the page itself shows, call the tool set_observing_site (the page also carries a declarative form named set_observing_site_form, and both go through the same validation). |
limit |
integer | no | How many of the best nights to return in full detail. |
Raw JSON schema
{
"type": "object",
"properties": {
"from_date": {
"type": "string",
"pattern": "^\\d{4}-\\d{2}-\\d{2}$",
"description": "First evening of the range, YYYY-MM-DD (inclusive)."
},
"to_date": {
"type": "string",
"pattern": "^\\d{4}-\\d{2}-\\d{2}$",
"description": "Last evening of the range, YYYY-MM-DD (inclusive). At most 62 nights from from_date."
},
"site": {
"type": "object",
"description": "Observing site to compute for. Omit to use the site currently shown in the app. Otherwise name a dark-sky catalog site with id (preferred) or name, OR pass BOTH latitude and longitude, plus time_zone (IANA, e.g. \"Pacific/Honolulu\") if you want local times; without a zone only UTC is returned. An object that does neither comes back as invalid_site with a hint. Answering for a site here does NOT move the app: to change the site the page itself shows, call the tool set_observing_site (the page also carries a declarative form named set_observing_site_form, and both go through the same validation).",
"properties": {
"id": {
"type": "string",
"maxLength": 40,
"description": "Dark-sky catalog id such as roque, mauna-kea, paranal; preferred over coordinates because it brings the exact elevation and IANA zone."
},
"latitude": {
"type": "number",
"minimum": -90,
"maximum": 90,
"description": "Decimal degrees, north positive."
},
"longitude": {
"type": "number",
"minimum": -180,
"maximum": 180,
"description": "Decimal degrees, EAST positive (Mauna Kea is -155.47)."
},
"elevation_m": {
"type": "number",
"minimum": -430,
"maximum": 9000
},
"time_zone": {
"type": "string",
"description": "IANA time zone name."
},
"name": {
"type": "string",
"maxLength": 80,
"description": "Catalog site name (\"Mauna Kea\", matched loosely) when you pass no coordinates, or the label for the coordinates when you do."
}
},
"additionalProperties": false
},
"limit": {
"type": "integer",
"minimum": 1,
"maximum": 62,
"default": 10,
"description": "How many of the best nights to return in full detail."
}
},
"required": [
"from_date",
"to_date"
],
"additionalProperties": false
}
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