Sirius Gwada

Sirius Gwada

Observe

Where, when and how to observe the heliacal rising in Guadeloupe

Prediction calculator

Choose your site to find out the exact date

Heliacal rising

July 22, 2026 · 05:12

Observation window

Jul 20 – Jul 24

Site2026 dateTime
Pointe des Châteaux
Elevated viewpoint with a clear panorama east over the Atlantic.
July 22, 2026 05:12
Pointe de la Grande Vigie
Guadeloupe's northernmost point, with a perfect sea horizon.
July 22, 2026 05:12
Duzer (Sainte-Rose)
Requires a clear vantage point east over the hills.
July 22, 2026 05:14
Saint-Félix (Le Gosier)
Beach with sea-level observation.
July 22, 2026 05:13
Grande Pointe (Trois-Rivières)
Coastal site with a useful elevation for observation.
July 22, 2026 05:14
Petit-Pérou
Site of the engraved rocks, observed from the coast.
July 22, 2026 05:14
Pointe du Vieux-Fort
Basse-Terre's southernmost point, overlooking the Saintes channel.
July 22, 2026 05:14

Map of observation sites

Seven landmark locations across the archipelago

  • Pointe des Châteaux

    Elevated viewpoint with a clear panorama east over the Atlantic.

    16.2476°N, -61.1771°O — 30 m

  • Pointe de la Grande Vigie

    Guadeloupe's northernmost point, with a perfect sea horizon.

    16.5098°N, -61.4666°O — 81 m

  • Duzer (Sainte-Rose)

    Requires a clear vantage point east over the hills.

    16.3361°N, -61.743°O — 20 m

  • Saint-Félix (Le Gosier)

    Beach with sea-level observation.

    16.2005°N, -61.4605°O — 5 m

  • Grande Pointe (Trois-Rivières)

    Coastal site with a useful elevation for observation.

    15.9696°N, -61.6308°O — 42 m

  • Petit-Pérou

    Site of the engraved rocks, observed from the coast.

    16.0517°N, -61.5567°O — 10 m

  • Pointe du Vieux-Fort

    Basse-Terre's southernmost point, overlooking the Saintes channel.

    15.9483°N, -61.7072°O — 20 m

Observation timeline

4:30 am

Preparation

Arrive on site, let your eyes adapt to the darkness

5:00 am

Search

Look towards the East-Southeast, near the horizon

5:15 am

Appearance

Sirius emerges from the dawn glow

5:30 am

Observation

The optimal moment to contemplate

Recommended equipment

Red lamp

Essential

Preserves night vision

Compass

Essential

To find East

Warm clothes

Essential

Mornings are cool

Binoculars

7x50 or 10x50 recommended

Notebook

To record your observations

Practical tips

Ideal weather

Clear sky to the East, no low clouds, moderate humidity

Moon phase

New moon or thin crescent for a darker sky

Useful apps

Stellarium, SkySafari, Star Walk to locate the constellations

As a group

Share this unique moment with family and friends

The wave phenomenon

The heliacal rising of Sirius does not happen simultaneously across the Earth. Like a cosmic wave, it moves from East to West, first reaching Réunion in late June, then sweeping across Africa, before finally reaching the Caribbean in July.

This animation shows the progression of this "planetary wave", following Earth's rotation and the position of Sirius in the sky. Each place experiences this sacred moment on a precise date, forming a natural cosmic calendar that has guided civilisations for millennia.

  • La Réunion

    27 juin

  • Kinshasa

    16 juillet

  • Douala

    18 juillet

  • Yaoundé

    19 juillet

  • Abidjan

    20 juillet

  • Accra

    21 juillet

  • Guadeloupe

    22 juillet

  • Martinique

    23 juillet

  • Dakar

    23 juillet

  • Cayenne

    24 juillet

  • Bamako

    25 juillet

  • Le Caire

    3 août

  • Paris

    15 août

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