# ASHRA, United States: what it is and when to go > ASHRA is an observatory in United States. Interests: Stargazing. The best time to visit is November to March. In June there are 13 h 10 of daylight, and in December, 10 h 50. 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/ashra/ - Reviewed on: 2026-10-08 - Language: en ## In a nutshell - **What it is:** Observatory · Stargazing - **Where:** United States - **You can go:** November to March. - **Nearest airport:** SFO San Francisco, 3,818 km as the crow flies - **Website:** [icrr.u-tokyo.ac.jp](https://www.icrr.u-tokyo.ac.jp/~ashra/index-e.html) - **Run by:** Institute for Cosmic Ray Research (ICRR) of the University of Tokyo - **Coordinates:** 19.54098, -155.56771 ## What it is and where ASHRA is an observatory in United States. Its coordinates are 19.54098, -155.56771; the nearest main airport is San Francisco International Airport (SFO, San Francisco), 3,818 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=19.540975%2C-155.567708) - [Directions](https://www.google.com/maps/dir/?api=1&destination=19.540975%2C-155.567708) - **Run by:** Institute for Cosmic Ray Research (ICRR) of the University of Tokyo It is one of the [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 Months when you can visit ASHRA: **November to March**. | Mes | Época | Hours of daylight | | --- | --- | --- | | January | Possible | 10 h 56 | | February | Possible | 11 h 22 | | March | Possible | 11 h 52 | | April | Better not | 12 h 27 | | May | Better not | 12 h 55 | | June | Better not | 13 h 10 | | July | Better not | 13 h 04 | | August | Better not | 12 h 40 | | September | Better not | 12 h 06 | | October | Better not | 11 h 32 | | November | Possible | 11 h 03 | | December | Possible | 10 h 50 | In June there are 13 h 10 of daylight, and in December, 10 h 50. 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. 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 - [Asteroid Terrestrial-impact Last Alert System](https://kokai.app/en/paises/america/estados-unidos/atlas-2/): Asteroid early warning system · 1.0 km - [Mauna Loa Solar Observatory](https://kokai.app/en/paises/america/estados-unidos/mauna-loa-solar-observatory/): Solar observatory · 1.1 km - [Keeling Curve](https://kokai.app/en/paises/america/estados-unidos/120-ft-tower/): Graph of the accumulation of CO2 in the Earth's atmosphere in Hawaii since 1958 · 1.1 km - [Mauna Loa](https://kokai.app/en/paises/america/estados-unidos/mauna-loa/): Volcano on the island of Hawaii in Hawaii, United States · 8.1 km - [Mauna Loa Cabin](https://kokai.app/en/paises/america/estados-unidos/mauna-loa-cabin/): Hiking · 8.4 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: Stargazing - [Palomar Observatory](https://kokai.app/en/paises/america/estados-unidos/palomar-observatory/): observatory in Southern California - [W. M. Keck Observatory](https://kokai.app/en/paises/america/estados-unidos/w-m-keck-observatory/): astronomical observatory located in Hawaii - [Lowell Observatory](https://kokai.app/en/paises/america/estados-unidos/lowell-observatory/): astronomical observatory - [Yerkes Observatory](https://kokai.app/en/paises/america/estados-unidos/yerkes-observatory/): astronomical observatory in Wisconsin, USA - [Very Large Array](https://kokai.app/en/paises/america/estados-unidos/karl-g-jansky-very-large-array/): radio astronomy observatory located on the Plains of San Agustin - [Griffith Observatory](https://kokai.app/en/paises/america/estados-unidos/griffith-observatory/): observatory in Los Angeles, California, USA Every United States place under Stargazing, each with its season, is on [its page](https://kokai.app/en/paises/america/estados-unidos/estrellas/). ## Frequently asked questions ### What is ASHRA? It is an observatory in United States. ### When is the best time to visit ASHRA? November to March. In June there are 13 h 10 of daylight, and in December, 10 h 50. ### How do you get to ASHRA? The nearest main airport is San Francisco International Airport (SFO), 3,818 km as the crow flies. From there, [directions](https://www.google.com/maps/dir/?api=1&destination=19.540975%2C-155.567708) 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 [Asteroid Terrestrial-impact Last Alert System](https://kokai.app/en/paises/america/estados-unidos/atlas-2/), [Mauna Loa Solar Observatory](https://kokai.app/en/paises/america/estados-unidos/mauna-loa-solar-observatory/), [Keeling Curve](https://kokai.app/en/paises/america/estados-unidos/120-ft-tower/). The rest is in [the United States guide](https://kokai.app/en/paises/america/estados-unidos/). Data from [OpenStreetMap](https://www.openstreetmap.org/way/706554587), 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).