# Hvězdárna Josefa Sienela, Czechia: what it is and when to go

> Hvězdárna Josefa Sienela is an observatory in Czechia (Olomouc). Interests: Stargazing. The best time to visit is December. In June there are 16 h 03 of daylight, and in December, 7 h 56. 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/europa/chequia/hvezdarna-josefa-sienela/
- Reviewed on: 2026-10-02
- Language: en

## In a nutshell

- **What it is:** Observatory · Stargazing
- **Where:** Czechia
- **Best time:** December.
- **Nearest airport:** BRQ Brno, 72 km as the crow flies
- **Website:** [hvezdarna.olomouc.cz](https://hvezdarna.olomouc.cz/)
- **Coordinates:** 49.62192, 17.37179

## What it is and where

Hvězdárna Josefa Sienela is an observatory in Czechia (Olomouc).

Hvězdárna Josefa Sienela v olomoucké městské části Lošov nabízí pro veřejnost pozorování noční oblohy pomocí dalekohledů (především Celestron NexStar 8 GPS) nebo promítání pořadu s astronomickou tematikou.

It is in [Olomouc](https://kokai.app/en/paises/europa/chequia/olomouc/), where this site lists 159 more places to see, 8.8 km from the centre.

Its coordinates are 49.62192, 17.37179; the nearest main airport is Brno-Tuřany Airport (BRQ, Brno), 72 km as the crow flies. How to get around Czechia (train, car, bus) is covered in [its country guide](https://kokai.app/en/paises/europa/chequia/#moverse).

- [Where it is](https://www.google.com/maps/search/?api=1&query=49.621915%2C17.371787)
- [Directions](https://www.google.com/maps/dir/?api=1&destination=49.621915%2C17.371787)

It is one of the [Stargazing](https://kokai.app/en/paises/europa/chequia/estrellas/) places in Czechia. 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 Hvězdárna Josefa Sienela is **December**.

| Mes | Época | Hours of daylight |
| --- | --- | --- |
| January | Possible | 8 h 22 |
| February | Possible | 9 h 51 |
| March | Possible | 11 h 33 |
| April | Better not | 13 h 30 |
| May | Better not | 15 h 09 |
| June | Better not | 16 h 03 |
| July | Better not | 15 h 41 |
| August | Better not | 14 h 14 |
| September | Better not | 12 h 21 |
| October | Better not | 10 h 28 |
| November | Possible | 8 h 47 |
| December | Best time | 7 h 56 |

In June there are 16 h 03 of daylight, and in December, 7 h 56. 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 Czechia in general, with its festivals and peak seasons, is in [its country guide](https://kokai.app/en/paises/europa/chequia/#cuando-ir).

## Before you go to Czechia

To enter Czechia there are 6 things to sort out before you leave, starting with “Valid Spanish ID card (DNI) or passport”: they are all, with their deadlines, in [the Czechia checklist](https://kokai.app/en/paises/europa/chequia/#antes-de-salir). Currency: Czech koruna (CZK); plugs: Type C and E · 230 V · 50 Hz; emergencies: 112 · 158 police · 155 ambulance.

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

- [[M] Nové Sady - Mariánské údolí](https://kokai.app/en/paises/europa/chequia/m-nove-sady-marianske-udoli/): Hiking · 1.4 km
- [Svatokopecké Pivo](https://kokai.app/en/paises/europa/chequia/svatokopecke-pivo/): Brewery · 2.6 km
- [Basilica of the Visitation of the Virgin Mary](https://kokai.app/en/paises/europa/chequia/bazilika-navstiveni-panny-marie/): Basiclica on Saint Hill, Olomouc · 2.6 km
- [Minipivovar Ničitel](https://kokai.app/en/paises/europa/chequia/minipivovar-nicitel/): Brewery · 2.7 km
- [Olomouc Zoo](https://kokai.app/en/paises/europa/chequia/zoo-olomouc/): Zoo in Darwinova Olomouc · 2.8 km

Distances are as the crow flies. Everything else is in [the Czechia guide](https://kokai.app/en/paises/europa/chequia/).

## More in Czechia: Stargazing

- [Kleť Observatory](https://kokai.app/en/paises/europa/chequia/klet-observatory/): astronomical observatory in the Czech Republic
- [Milešovka](https://kokai.app/en/paises/europa/chequia/milesovka/): mountain in the Czech Republic
- [Observatory Vsetín](https://kokai.app/en/paises/europa/chequia/hvezdarna-vsetin/): observatory in the Czech republic
- [Prague Planetarium](https://kokai.app/en/paises/europa/chequia/planetarium/): planetarium in Prague, Czech Republic
- [Brno Observatory and Planetarium](https://kokai.app/en/paises/europa/chequia/hvezdarna-a-planetarium-brno/): Museum
- [Ďáblice Observatory](https://kokai.app/en/paises/europa/chequia/hvezdarna-dablice/): Observatory in Prague

Every Czechia place under Stargazing, each with its season, is on [its page](https://kokai.app/en/paises/europa/chequia/estrellas/).

## Frequently asked questions

### What is Hvězdárna Josefa Sienela?

It is an observatory in Czechia.

### When is the best time to visit Hvězdárna Josefa Sienela?

December. In June there are 16 h 03 of daylight, and in December, 7 h 56.

### How do you get to Hvězdárna Josefa Sienela?

The nearest main airport is Brno-Tuřany Airport (BRQ), 72 km as the crow flies. From there, [directions](https://www.google.com/maps/dir/?api=1&destination=49.621915%2C17.371787) opens the route on the map, and how to get around Czechia is explained in [its country guide](https://kokai.app/en/paises/europa/chequia/#moverse).

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

With one tap. In Kokai it is already on the Czechia 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 [[M] Nové Sady - Mariánské údolí](/paises/europa/chequia/m-nove-sady-marianske-udoli/), [Svatokopecké Pivo](https://kokai.app/en/paises/europa/chequia/svatokopecke-pivo/), [Basilica of the Visitation of the Virgin Mary](https://kokai.app/en/paises/europa/chequia/bazilika-navstiveni-panny-marie/). The rest is in [the Czechia guide](https://kokai.app/en/paises/europa/chequia/).

Data from [OpenStreetMap](https://www.openstreetmap.org/way/114322717), 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).