# Robert Ferguson Observatory, United States: what it is and when to go

> Robert Ferguson Observatory is an observatory in United States (Rutherford). Interests: Museums and art and Stargazing. The best time to visit is March to October. In June there are 14 h 40 of daylight, and in December, 9 h 20. Here is what it is, where it lies, when to come, how to get there and what else is nearby to turn it into a trip.

- Address: https://kokai.app/en/paises/america/estados-unidos/robert-ferguson-observatory/
- Reviewed on: 2026-10-08
- Language: en

## In a nutshell

- **What it is:** Observatory · Museums and art, Stargazing
- **Where:** United States · Adobe Canyon Road 2605
- **Best time:** March to October.
- **Nearest airport:** SFO San Francisco, 92 km as the crow flies
- **Website:** [rfo.org](https://rfo.org/)
- **Coordinates:** 38.43838, -122.50874

## What it is and where

Robert Ferguson Observatory is an observatory in United States (Rutherford).

It is in [Rutherford](https://kokai.app/en/paises/america/estados-unidos/rutherford/), where this site lists 35 more places to see, 9.6 km from the centre.

Its coordinates are 38.43838, -122.50874; the nearest main airport is San Francisco International Airport (SFO, San Francisco), 92 km as the crow flies. How to get around United States (train, car, bus) is covered in [its country guide](https://kokai.app/en/paises/america/estados-unidos/#moverse).

- [Where it is](https://www.google.com/maps/search/?api=1&query=38.438377%2C-122.508739)
- [Directions](https://www.google.com/maps/dir/?api=1&destination=38.438377%2C-122.508739)

It is one of the [Museums and art](https://kokai.app/en/paises/america/estados-unidos/museos/) and [Stargazing](https://kokai.app/en/paises/america/estados-unidos/estrellas/) places in United States. In [Kokai](https://kokai.app/en/) it is already on your trip map next to the places you save yourself, and it goes into a day's plan with one tap.

## When to go

The best time to visit Robert Ferguson Observatory is **March to October**.

| Mes | Época | Hours of daylight |
| --- | --- | --- |
| January | Possible | 9 h 36 |
| February | Possible | 10 h 34 |
| March | Best time | 11 h 42 |
| April | Best time | 13 h |
| May | Best time | 14 h 05 |
| June | Best time | 14 h 40 |
| July | Best time | 14 h 26 |
| August | Best time | 13 h 30 |
| September | Best time | 12 h 14 |
| October | Best time | 10 h 58 |
| November | Possible | 9 h 52 |
| December | Possible | 9 h 20 |

In June there are 14 h 40 of daylight, and in December, 9 h 20. Daylight hours are calculated from the site's latitude for the 15th of each month; when planning a full day on foot they matter as much as the weather.

| What you come for | Best time | Possible |
| --- | --- | --- |
| Museums and art | March to October | November to February |
| Stargazing | — | November to March |

It is not the same trip whatever you come for: Robert Ferguson Observatory has a different season depending on what you want to do here, and [Kokai](https://kokai.app/en/) puts it in the right month for you.

When to go to United States in general, with its festivals and peak seasons, is in [its country guide](https://kokai.app/en/paises/america/estados-unidos/#cuando-ir).

## Before you go to United States

To enter United States there are 9 things to sort out before you leave, starting with “Book national parks and cars in advance”: they are all, with their deadlines, in [the United States checklist](https://kokai.app/en/paises/america/estados-unidos/#antes-de-salir). Currency: US dollar (USD); plugs: Type A and B · 120 V · 60 Hz (you need an adapter, and check your devices' voltage); emergencies: 911 for everything.

In [Kokai](https://kokai.app/en/) you tick off the checklist inside your trip, and each item reminds you when it is time to do it.

## What is nearby

- [Kunde Family Winery](https://kokai.app/en/paises/america/estados-unidos/kunde-family-winery/): Winery · 4.1 km
- [VJB](https://kokai.app/en/paises/america/estados-unidos/vjb/): Winery · 4.3 km
- [Mount Hood](https://kokai.app/en/paises/america/estados-unidos/mount-hood/): Mountain in California · 4.6 km
- [Saint Francis Winery](https://kokai.app/en/paises/america/estados-unidos/saint-francis-winery/): Winery · 5.9 km
- [Morton's Warm Springs](https://kokai.app/en/paises/america/estados-unidos/morton-s-warm-springs/): Hot spring bath · 6.1 km

Distances are as the crow flies. Everything else is in [the United States guide](https://kokai.app/en/paises/america/estados-unidos/).

## More in United States: Museums and art

- [Metropolitan Museum of Art](https://kokai.app/en/paises/america/estados-unidos/the-metropolitan-museum-of-art/): art museum in New York City, United States
- [Museum of Modern Art](https://kokai.app/en/paises/america/estados-unidos/moma/): art museum in Manhattan in New York City, New York, United States
- [Rock and Roll Hall of Fame](https://kokai.app/en/paises/america/estados-unidos/rock-and-roll-hall-of-fame/): music museum in Cleveland, Ohio, United States
- [Solomon R. Guggenheim Museum](https://kokai.app/en/paises/america/estados-unidos/museo-guggenheim/): art museum in New York, New York
- [National Gallery of Art](https://kokai.app/en/paises/america/estados-unidos/galeria-nacional-de-arte/): national art museum in Washington, D.C
- [American Museum of Natural History](https://kokai.app/en/paises/america/estados-unidos/museo-americano-de-historia-natural/): natural history museum in Manhattan, New York

Every United States place under Museums and art, each with its season, is on [its page](https://kokai.app/en/paises/america/estados-unidos/museos/).

## Frequently asked questions

### What is Robert Ferguson Observatory?

It is an observatory in United States.

### When is the best time to visit Robert Ferguson Observatory?

March to October. In June there are 14 h 40 of daylight, and in December, 9 h 20.

### How do you get to Robert Ferguson Observatory?

The nearest main airport is San Francisco International Airport (SFO), 92 km as the crow flies. From there, [directions](https://www.google.com/maps/dir/?api=1&destination=38.438377%2C-122.508739) opens the route on the map, and how to get around United States is explained in [its country guide](https://kokai.app/en/paises/america/estados-unidos/#moverse).

### How do I add it to my trip?

With one tap. In Kokai it is already on the United States map, next to the places you save yourself: add it to a day's plan, give it a time and, if you like, get a reminder when you pass nearby.

### What else is around here?

Nearby you have [Kunde Family Winery](https://kokai.app/en/paises/america/estados-unidos/kunde-family-winery/), [VJB](https://kokai.app/en/paises/america/estados-unidos/vjb/), [Mount Hood](https://kokai.app/en/paises/america/estados-unidos/mount-hood/). The rest is in [the United States guide](https://kokai.app/en/paises/america/estados-unidos/).

Data from [OpenStreetMap](https://www.openstreetmap.org/way/342248085), licensed under the ODbL, and from [Wikidata](https://www.wikidata.org/), CC0. Daylight hours are calculated from the latitude. More in [credits](https://kokai.app/en/aviso/#creditos).