Starry Memory

A personalised star map gift for Tromsø

Use the free local tool

This page provides a result prefilled with the place and coordinates. The calculations and phone gyroscope work without an order; the HD poster remains optional. Explore the Tromsø sky free

The exact sky of a meaningful Tromsø moment, calculated before you buy

A place is not a decorative caption on a star map. For a memory in Tromsø, the selected coordinates, local time and timezone determine the celestial orientation. This guide starts with a free, location-aware sky and phone gyroscope; the watermark-free HD poster is an optional keepsake after you have checked the result.

Why choose Starry Memory

  • A place-driven gift — Tromsø starts at 69.6489° N, 18.9551° E; choosing a venue or address replaces that centre point before the poster is calculated.
  • GPS · IANA reference — Exact reference: Troms, 69.6489° N, 18.9551° E, Europe/Oslo.
  • Free tool — The city-specific tool works free in the browser and does not create an order.
  • Transparent limits — Weather, light pollution and local obstructions are stated as limits instead of being hidden.

In Tromsø, the keepsake begins with a real point on Earth before it becomes an image of the sky. Its verifiable starting point is GeoNames 3133895, 69.6489° N, 18.9551° E, in timezone Europe/Oslo.

The astronomical fingerprint of Tromsø

Tromsø is represented by 69.6489° N, 18.9551° E, in Troms, using the IANA zone Europe/Oslo. This is a polar viewpoint: the relevant celestial pole stands about 69.6° above its horizon. GeoNames record 3133895 supplies the geographic reference; its population field is 41,915 and is used for catalogue selection, not presented as a live census. No source elevation is used, so a flat horizon remains the transparent default. The following pairs are approximate daylight / night duration around the 15th of each month: January: 0 h 00 / 24 h 00; February: 6 h 44 / 17 h 16; March: 10 h 59 / 13 h 01; April: 15 h 32 / 8 h 28; May: 20 h 52 / 3 h 08; June: 24 h 00 / 0 h 00; July: 24 h 00 / 0 h 00; August: 17 h 31 / 6 h 29; September: 12 h 48 / 11 h 12; October: 8 h 23 / 15 h 37; November: 2 h 46 / 21 h 14; December: 0 h 00 / 24 h 00. The longest estimated night in this model is January at 24 h 00; the shortest is June at 0 h 00. “Night” here is the complement of daylight on a flat horizon. Civil, nautical and astronomical twilight are not interchangeable, and weather is not predicted by this table.

Tromsø's verifiable local record

Calculation identity: GeoNames 3133895 · city Tromsø · region Troms · country Norway · national selection rank 17 · reference population 41,915 · source elevation —. Spatial fingerprint: latitude 69.64890 · longitude 18.95508 · north hemisphere · timezone Europe/Oslo · celestial-pole altitude 69.6°. Seasonal signature: longest night in January, 24 h 00 · shortest night in June, 0 h 00 · range 24.00 hours. Meridian star markers: Cepheus 89.6° * · Draco 85.4° * · Ursa Minor 82.6° * · Cassiopeia 80.4° * · Ursa Major 76.4° * · Perseus 65.4° *. Nearby catalogue cities: Trondheim 787 km · Lillestrøm 1139 km · Oslo 1148 km. First regional eclipse shortlist: 2027-02-20 Penumbral lunar eclipse 23:14 UTC · 2027-08-02 Total solar eclipse 10:07 UTC · 2028-01-12 Partial lunar eclipse 04:14 UTC. Together these values form the local evidence record for the “gift” page; they change with place and remain separate from real weather.

Tromsø compared with nearby catalogue cities

1. Tromsø → Trondheim: 786.8 km · Δlat -6.218° · Δlon -8.560° · Δpole -6.2° · timezone Europe/Oslo = Europe/Oslo · longest night December 19 h 56 | 2. Tromsø → Lillestrøm: 1138.7 km · Δlat -9.693° · Δlon -7.906° · Δpole -9.6° · timezone Europe/Oslo = Europe/Oslo · longest night December 18 h 26 | 3. Tromsø → Oslo: 1148.0 km · Δlat -9.736° · Δlon -8.209° · Δpole -9.7° · timezone Europe/Oslo = Europe/Oslo · longest night December 18 h 25. Monthly night comparison with the nearest catalogue reference — January: Tromsø 24 h 00 / Trondheim 18 h 49 / Δ +5.19 h · February: Tromsø 17 h 16 / Trondheim 15 h 46 / Δ +1.51 h · March: Tromsø 13 h 01 / Trondheim 12 h 45 / Δ +0.27 h · April: Tromsø 8 h 28 / Trondheim 9 h 25 / Δ -0.96 h · May: Tromsø 3 h 08 / Trondheim 6 h 17 / Δ -3.15 h · June: Tromsø 0 h 00 / Trondheim 4 h 04 / Δ -4.07 h · July: Tromsø 0 h 00 / Trondheim 5 h 04 / Δ -5.07 h · August: Tromsø 6 h 29 / Trondheim 8 h 05 / Δ -1.61 h · September: Tromsø 11 h 12 / Trondheim 11 h 25 / Δ -0.21 h · October: Tromsø 15 h 37 / Trondheim 14 h 38 / Δ +0.99 h · November: Tromsø 21 h 14 / Trondheim 17 h 52 / Δ +3.38 h · December: Tromsø 24 h 00 / Trondheim 19 h 56 / Δ +4.06 h. For a gift, the comparison explains why the confirmed place matters: a Tromsø memory should not silently become its neighbour even when both share a timezone.

Latitude-screened constellations for Tromsø

Each entry below gives an approximate maximum altitude at meridian transit and a practical season; an asterisk means circumpolar in this simplified centroid model: Cepheus: 89.6°, all year *; Draco: 85.4°, all year *; Ursa Minor: 82.6°, all year *; Cassiopeia: 80.4°, all year *; Ursa Major: 76.4°, all year *; Perseus: 65.4°, all year *; Auriga: 62.4°, all year *; Cygnus: 60.4°, all year *; Andromeda: 58.4°, all year *; Lyra: 56.4°, all year *; Boötes: 50.4°, all year *; Gemini: 42.4°, all year *; Taurus: 38.4°, winter; Leo: 35.4°, spring. This is a planning guide, not a promise that every star will be visible from a bright street. Date, hour, local obstructions and light pollution still matter. The live sky tool performs the date-specific projection that a static latitude table cannot.

Eclipse dates connected to the wider Norway region

20 February 2027: Penumbral lunar eclipse, 23:14 UTC; 2 August 2027: Total solar eclipse, 10:07 UTC; 12 January 2028: Partial lunar eclipse, 04:14 UTC; 26 January 2028: Annular solar eclipse, 15:08 UTC; 6 July 2028: Partial lunar eclipse, 18:20 UTC; 31 December 2028: Total lunar eclipse, 16:53 UTC. This is deliberately a regional shortlist. Solar-eclipse paths are narrow, lunar eclipses require the Moon to be above the local horizon, and both can be lost to cloud. Open the NASA source attached to each event before planning travel or observation; never look at the Sun without certified eclipse viewers.

What the calculation does — and does not claim

Coordinates, date and local time feed the same astronomical workflow used by the poster. The HYG catalogue provides star entries, while Astronomy Engine calculates moving bodies. The page does not claim that city-centre coordinates equal a hospital, venue or home: selecting an autocomplete suggestion replaces the shortcut with that location. It also separates astronomical geometry from weather and light pollution, so a correct map never becomes a claim that the ground-level sky was cloudless.

Free gyroscope first, optional poster second

On a compatible phone, the gyroscope turns the calculated sky into a movable window: tilt and rotate to explore, with star names shown beside key points. That experience is free. If a date deserves a keepsake, the same place can continue into the editor. The protected preview remains watermarked before payment; the €3.99 purchase unlocks the 4960 × 7016 px, 300 DPI file. Physical formats appear only when availability, delivery supplement and timing can be checked for the destination. Checkout is in euros; the card issuer shows the current conversion to Norwegian kroner (NOK).

Frequently asked questions

What makes a Tromsø star map personal?

The confirmed date, local time and coordinates determine the map. The city shortcut is 69.6489° N, 18.9551° E, but an exact selected venue can replace it.

Can I replace the centre of Tromsø with an exact address?

Yes. Choose the intended autocomplete suggestion; its coordinates replace the city shortcut. Unselected free text is never silently sent to a default city.

Is the Tromsø tool free?

Yes. The local calculation, tables and gyroscope exploration can be used without payment. Only the unlocked HD poster is paid.

Does this guarantee clear-sky visibility?

No. The calculations describe geometry. Cloud, terrain, buildings and light pollution can change what a person sees from the ground.

Do I have to buy a poster?

No. The tool stands on its own. If wanted, the watermark-free 4960 × 7016 px, 300 DPI file costs €3.99. Checkout is in euros; the card issuer shows the current conversion to Norwegian kroner (NOK).

Create the optional €3.99 HD poster

See also

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