# Cosmic Ray Observation Station, China: what it is and when to go > Cosmic Ray Observation Station is an observatory (宇宙射线观测站) in China (Kunming). Interests: Stargazing. The best time to visit is November to March. In June there are 13 h 32 of daylight, and in December, 10 h 28. 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/asia/china/cosmic-ray-observation-station/ - Reviewed on: 2026-10-08 - Language: en ## In a nutshell - **What it is:** Observatory · Stargazing - **Local name:** 宇宙射线观测站 - **Where:** China - **You can go:** November to March. - **Nearest airport:** CTU Chengdu (Shuangliu), 654 km as the crow flies - **Run by:** 云南大学&香港大学 - **Coordinates:** 24.76167, 102.89546 ## What it is and where Cosmic Ray Observation Station is an observatory (宇宙射线观测站) in China (Kunming). It is in [Kunming](https://kokai.app/en/paises/asia/china/kunming/), where this site lists 28 more places to see, 41 km from the centre. Its coordinates are 24.76167, 102.89546; the nearest main airport is Chengdu Shuangliu International Airport (CTU, Chengdu (Shuangliu)), 654 km as the crow flies. How to get around China (train, car, bus) is covered in [its country guide](https://kokai.app/en/paises/asia/china/#moverse). - [Where it is](https://www.google.com/maps/search/?api=1&query=24.761673%2C102.895457) - [Directions](https://www.google.com/maps/dir/?api=1&destination=24.761673%2C102.895457) - **Run by:** 云南大学&香港大学 It is one of the [Stargazing](https://kokai.app/en/paises/asia/china/estrellas/) places in China. 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 Cosmic Ray Observation Station: **November to March**. | Mes | Época | Hours of daylight | | --- | --- | --- | | January | Possible | 10 h 37 | | February | Possible | 11 h 10 | | March | Possible | 11 h 50 | | April | Better not | 12 h 35 | | May | Better not | 13 h 12 | | June | Better not | 13 h 32 | | July | Better not | 13 h 24 | | August | Better not | 12 h 52 | | September | Better not | 12 h 08 | | October | Better not | 11 h 24 | | November | Possible | 10 h 46 | | December | Possible | 10 h 28 | In June there are 13 h 32 of daylight, and in December, 10 h 28. 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 China in general, with its festivals and peak seasons, is in [its country guide](https://kokai.app/en/paises/asia/china/#cuando-ir). ## Before you go to China To enter China there are 9 things to sort out before you leave, starting with “Passport valid for six months”: they are all, with their deadlines, in [the China checklist](https://kokai.app/en/paises/asia/china/#antes-de-salir). Currency: Yuan or renminbi (CNY); plugs: Type A, C and I · 220 V · 50 Hz (you need an adapter); emergencies: 110 police · 120 ambulance · 119 fire brigade. 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 - [Chaijiafen](https://kokai.app/en/paises/asia/china/chaijiafen/): Mountain in People's Republic of China · 13 km - [Chengjiang Fossil Site](https://kokai.app/en/paises/asia/china/chengjiang-fossil-site/): Assemblage of organisms found in the Maotianshan Shales · 14 km - [Qicai Yunnan Gudian Hot Spring Villa](https://kokai.app/en/paises/asia/china/qicai-yunnan-gudian-hot-spring-villa/): Onsen · 14 km - [Chenggong Confucian Temple](https://kokai.app/en/paises/asia/china/chenggong-confucian-temple/): Temples · 18 km - [Shizhaishan site](https://kokai.app/en/paises/asia/china/shizhaishan/): Archaeological site · 21 km Distances are as the crow flies. Everything else is in [the China guide](https://kokai.app/en/paises/asia/china/). ## More in China: Stargazing - [LAMOST](https://kokai.app/en/paises/asia/china/large-sky-area-multi-object-fibre-spectroscopic-telescope/): Large Sky Area Multi-Object Fibre Spectroscopic Telescope - [Tate's Cairn](https://kokai.app/en/paises/asia/china/tate-s-cairn/): mountain in Hong Kong - [Shanghai Astronomy Museum](https://kokai.app/en/paises/asia/china/shanghai-astronomy-museum/): building in Shanghai, China - [Sheshan Observatory](https://kokai.app/en/paises/asia/china/sheshan-observatory/): Observatory - [Yunnan Astronomical Observatory](https://kokai.app/en/paises/asia/china/yunnan-observatories-chinese-academy-of-sciences/): observatory in China - [Large High Altitude Air Shower Observatory](https://kokai.app/en/paises/asia/china/large-high-altitude-air-shower-observatory/): cosmic ray observatory in Daocheng, Garze, Sichuan, China Every China place under Stargazing, each with its season, is on [its page](https://kokai.app/en/paises/asia/china/estrellas/). ## Frequently asked questions ### What is Cosmic Ray Observation Station? It is an observatory (宇宙射线观测站 in the local language) in China. ### When is the best time to visit Cosmic Ray Observation Station? November to March. In June there are 13 h 32 of daylight, and in December, 10 h 28. ### How do you get to Cosmic Ray Observation Station? The nearest main airport is Chengdu Shuangliu International Airport (CTU), 654 km as the crow flies. From there, [directions](https://www.google.com/maps/dir/?api=1&destination=24.761673%2C102.895457) opens the route on the map, and how to get around China is explained in [its country guide](https://kokai.app/en/paises/asia/china/#moverse). ### How do I add it to my trip? With one tap. In Kokai it is already on the China 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 [Chaijiafen](https://kokai.app/en/paises/asia/china/chaijiafen/), [Chengjiang Fossil Site](https://kokai.app/en/paises/asia/china/chengjiang-fossil-site/), [Qicai Yunnan Gudian Hot Spring Villa](https://kokai.app/en/paises/asia/china/qicai-yunnan-gudian-hot-spring-villa/). The rest is in [the China guide](https://kokai.app/en/paises/asia/china/). Data from [OpenStreetMap](https://www.openstreetmap.org/way/1332623881), 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).