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. See the Central Coast constellation table
A latitude-based guide with transit altitude, season and circumpolar status
Not every constellation rises from every latitude. This guide compares the representative declination of well-known constellations with the latitude of Central Coast. It shows which patterns can clear a practical horizon, how high they culminate and which northern or southern groups stay circumpolar.
From Central Coast, latitude decides how high each familiar pattern can climb above an ideal horizon. Its verifiable starting point is GeoNames 8310663, 33.4298° S, 151.3714° E, in timezone Australia/Sydney.
Each entry below gives an approximate maximum altitude at meridian transit and a practical season; an asterisk means circumpolar in this simplified centroid model: Crux: 63.4°, all year *; Carina: 63.4°, all year *; Pavo: 58.4°, all year *; Hydrus: 53.4°, all year *; Octans: 41.4°, all year *; Scorpius: 82.6°, winter; Sagittarius: 81.6°, winter; Canis Major: 76.6°, summer; Centaurus: 76.4°, autumn; Phoenix: 75.4°, spring; Virgo: 60.6°, autumn; Aquila: 56.6°, winter; Orion: 51.6°, summer; Leo: 41.6°, autumn. 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.
Calculation identity: GeoNames 8310663 · city Central Coast · region New South Wales · country Australia · national selection rank 10 · reference population 346,596 · source elevation —. Spatial fingerprint: latitude -33.42979 · longitude 151.37144 · south hemisphere · timezone Australia/Sydney · celestial-pole altitude 33.4°. Seasonal signature: longest night in June, 14 h 12 · shortest night in December, 9 h 48 · range 4.40 hours. Meridian star markers: Crux 63.4° * · Carina 63.4° * · Pavo 58.4° * · Hydrus 53.4° * · Octans 41.4° * · Scorpius 82.6°. Nearby catalogue cities: Sydney 51 km · Newcastle 67 km · Wollongong 119 km. First regional eclipse shortlist: 2027-07-18 Penumbral lunar eclipse 16:04 UTC · 2027-08-17 Penumbral lunar eclipse 07:14 UTC · 2028-07-06 Partial lunar eclipse 18:20 UTC. Together these values form the local evidence record for the “constellations” page; they change with place and remain separate from real weather.
1. Central Coast → Sydney: 51.0 km · Δlat -0.438° · Δlon -0.164° · Δpole +0.5° · timezone Australia/Sydney = Australia/Sydney · longest night June 14 h 14 | 2. Central Coast → Newcastle: 67.4 km · Δlat +0.500° · Δlon +0.409° · Δpole -0.5° · timezone Australia/Sydney = Australia/Sydney · longest night June 14 h 10 | 3. Central Coast → Wollongong: 119.0 km · Δlat -0.994° · Δlon -0.478° · Δpole +1.0° · timezone Australia/Sydney = Australia/Sydney · longest night June 14 h 17. Monthly night comparison with the nearest catalogue reference — January: Central Coast 10 h 01 / Sydney 9 h 59 / Δ +0.04 h · February: Central Coast 10 h 48 / Sydney 10 h 47 / Δ +0.02 h · March: Central Coast 11 h 45 / Sydney 11 h 45 / Δ +0.00 h · April: Central Coast 12 h 50 / Sydney 12 h 51 / Δ -0.01 h · May: Central Coast 13 h 44 / Sydney 13 h 46 / Δ -0.03 h · June: Central Coast 14 h 12 / Sydney 14 h 14 / Δ -0.04 h · July: Central Coast 14 h 01 / Sydney 14 h 02 / Δ -0.03 h · August: Central Coast 13 h 14 / Sydney 13 h 16 / Δ -0.02 h · September: Central Coast 12 h 12 / Sydney 12 h 12 / Δ +0.00 h · October: Central Coast 11 h 09 / Sydney 11 h 08 / Δ +0.02 h · November: Central Coast 10 h 14 / Sydney 10 h 12 / Δ +0.03 h · December: Central Coast 9 h 48 / Sydney 9 h 46 / Δ +0.04 h. For constellation screening, latitude difference becomes a meridian-altitude difference; a small change is reported as small rather than exaggerated for local copy.
Central Coast is represented by 33.4298° S, 151.3714° E, in New South Wales, using the IANA zone Australia/Sydney. This is a mid-latitude viewpoint: the relevant celestial pole stands about 33.4° above its horizon. GeoNames record 8310663 supplies the geographic reference; its population field is 346,596 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: 13 h 59 / 10 h 01; February: 13 h 12 / 10 h 48; March: 12 h 15 / 11 h 45; April: 11 h 10 / 12 h 50; May: 10 h 16 / 13 h 44; June: 9 h 48 / 14 h 12; July: 9 h 59 / 14 h 01; August: 10 h 46 / 13 h 14; September: 11 h 48 / 12 h 12; October: 12 h 51 / 11 h 09; November: 13 h 46 / 10 h 14; December: 14 h 12 / 9 h 48. The longest estimated night in this model is June at 14 h 12; the shortest is December at 9 h 48. “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.
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.
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 Australian dollars (AUD).
It removes patterns that only graze an ideal horizon. 21 catalogue groups pass that screen here, but local hills and buildings can require a higher threshold.
Yes. Choose the intended autocomplete suggestion; its coordinates replace the city shortcut. Unselected free text is never silently sent to a default city.
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No. The calculations describe geometry. Cloud, terrain, buildings and light pollution can change what a person sees from the ground.
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 Australian dollars (AUD).
See the Central Coast constellation table
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