Grand'Rivière tides today
- Tide now 0.4 ft ↓ falling · low 11:56 pm (0.4 ft)
- Best time tomorrow 5:40–6:30 am good day · 7/10
- Beach tomorrow 8:00 am–12:00 pm Good beach day · 8/10
- Waves · water 2.9 ft · 85 °F slight · 8.0 s from the northeast
- Wind · air 6 mph · 79 °F from the E, gusts 13 · light drizzle
- Surf tomorrow 1.6–2.5 ft Fair day · 4/10 · 6:00–10:00 am
- Sun 5:59 am–5:38 pm 11 h 38 min of daylight
- Moon 91% · 7:53 pm waning gibbous · rises at 7:53 pm
Today in Grand'Rivière there are high tides at 5:29 am (1.7 ft) and 4:18 pm (2.2 ft) and low tides at 10:15 am and 11:56 pm. Tide coefficient 104. Right now the tide is falling toward the low tide at 11:56 pm. The sun rises at 5:59 am and sets at 5:38 pm: 11 h 38 min of daylight. The moon is 91% illuminated (waning gibbous) and rises at 7:53 pm. Major solunar periods run from 12:37 am to 2:37 am and from 1:09 pm to 3:09 pm. The next spring tides arrive from October 26 to 28. The sea is slight, with 2.9 ft waves. There's a light breeze from the east (6 mph). Light drizzle, 79 °F.
Fishing in Grand'Rivière today
Best time to fish
Solunar activity today: medium- High tide at 5:29 am, coefficient 104
- Sunrise at 5:59 am
- Steady pressure (29.97 inHg), light cross-shore wind (4 mph) and some swell (2.8 ft waves) to stir the water
- Waning gibbous: a bit more activity than at the quarters
- Highest tide coefficient today: 104 (big spring tides)
Your day at a glance
The best window, 5:40 am to 6:30 am, combines the 5:29 am high tide, sunrise and some swell. Also good from 3:20 pm to 5:20 pm, with the 4:18 pm high tide, sunset and some swell. Also good from 9:10 am to 11:10 am, with the 10:15 am low tide and some swell.
Species with the most records nearby: yellowtail snapper, gray snapper, great barracuda and common octopus. October is one of the months when these are seen most: gray snapper and common octopus. What you can catch
Beach day in Grand'Rivière
Is it a beach day?
1 good hour- Mostly sunny
- Feels like 92 °F: hot
- Offshore breeze (7 mph)
- Calm for swimming: 2.7 ft waves
- Water at 85 °F (very warm)
- Rain (0.03 in)
Today, hour by hour
- Swimming Calm · 2.7 ft
2.7 ft waves: calm for swimming. Low rip current risk. Always follow the lifeguard's flags.
- Water 85 °F
Very warm: barely refreshing.
- Sun & sunscreen UV 9 · SPF 50
Max UV 9 (very high): SPF 50 sunscreen, reapplied every 2 hours. Seek shade 11:00 am–1:00 pm (very high UV).
- Wind 9 mph
Offshore breeze (9 mph). Watch floats and inflatables: offshore wind carries them out to sea.
- Tide & sand 11:56 pm
Low tide at 10:15 am and 11:56 pm: that's when there's the most sand. High tide at 5:29 am and 4:18 pm. Coefficient 104 (spring tides): little sand left at high tide.
The best window, 7:00 am to 9:00 am, brings sunshine, beach weather, little wind, a calm sea and water at 85 °F, though with rain.
We don't have data on jellyfish, sargassum or beach closures: ask the lifeguard or check with the local beach authority. How it works · The next 7 days
Beaches near Grand'Rivière
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- Plage de Sinai 0.3 mi · SW
- Parking
- Plage de l'Anse Couleuvre 3.5 mi · SW
- Parking
Excellent water quality 2025 season, EEA
- Plage de l'Anse Céron 4.1 mi · SW
- Restrooms
Good water quality 2025 season, EEA
- Plage du Prêcheur 5.8 mi · SW
- Plage de la Charmeuse 6.2 mi · SW
Good water quality 2025 season, EEA
Named beaches within 6.2 mi, nearest first. Amenities from OpenStreetMap: some may be missing or out of date. View on OpenStreetMap · Add or fix on OpenStreetMap
Beaches and amenities: © OpenStreetMap contributors (ODbL). Bathing water quality: European Environment Agency (EEA), with data from the French Ministry of Health (baignades.sante.gouv.fr).
Webcams near Grand'Rivière
Webcams provided by windy.com — add a webcam
Tides in Grand'Rivière
Today's high and low tides
- ▲ High tide 5:29 am 1.7 ft · coef. 104
- ▼ Low tide 10:15 am 1.3 ft
- ▲ High tide 4:18 pm 2.2 ft · coef. 102
- ▼ Next low tide 11:56 pm 0.4 ft
↓ Falling The tide is falling. 1 min to low tide at 11:56 pm.
Tide coefficient 104 for the 5:29 am high tide and 102 for the 4:18 pm high tide. Big spring tides. The water rises and falls 1.8 ft between the highest high and the lowest low: a large range for this place. 70 is an average tide here; 90 and above means spring tides; below 45, neap tides. What is the tide coefficient?
2026 extremes: the highest tide of the year is on July 15 (2.5 ft) and the lowest, on January 2 (0.0 ft).
Mixed: two high and two low tides a day, but of quite different heights.
Heights above chart datum: the lowest astronomical tide (LAT), the zero of nautical charts in Europe. Astronomical prediction: wind and air pressure can raise or lower the water by a few inches, and more in a storm. Not for navigation. chart datum (LAT)
Tide coefficient and range in October
The biggest tides of the month came from October 26 to 28 (coefficient 105, 1.8 ft range). The smallest, on October 19 (coefficient 41, 1.0 ft).
Tide and solunar table · this week
| Day | Sun | Tide 1 | Tide 2 | Tide 3 | Tide 4 | Coef. | Moon | Major periods | Activity |
|---|---|---|---|---|---|---|---|---|---|
| Today, Wed 28 | 5:59 am · 5:38 pm | High tide 5:29 am · 1.7 ft | Low tide 10:15 am · 1.3 ft | High tide 4:18 pm · 2.2 ft | Low tide 11:56 pm · 0.4 ft | Coef. 104 | 91% | Major periods 12:37 am · 1:09 pm | Medium |
| Thu 29 | 6:00 am · 5:37 pm | High tide 6:21 am · 1.6 ft | Low tide 10:53 am · 1.3 ft | High tide 5:02 pm · 2.2 ft | — | Coef. 99 | 84% | Major periods 1:41 am · 2:13 pm | Medium |
| Fri 30 | 6:00 am · 5:37 pm | Low tide 12:47 am · 0.4 ft | High tide 7:21 am · 1.6 ft | Low tide 11:38 am · 1.4 ft | High tide 5:50 pm · 2.2 ft | Coef. 90 | 74% | Major periods 2:46 am · 3:17 pm | Medium |
| Sat 31 | 6:00 am · 5:36 pm | Low tide 1:39 am · 0.5 ft | High tide 8:35 am · 1.6 ft | Low tide 12:36 pm · 1.4 ft | High tide 6:43 pm · 2.1 ft | Coef. 78 | 63% | Major periods 3:48 am · 4:18 pm | Medium |
| Sun 1 | 6:00 am · 5:36 pm | Low tide 2:33 am · 0.7 ft | High tide 9:58 am · 1.6 ft | Low tide 1:51 pm · 1.5 ft | High tide 7:45 pm · 2.0 ft | Coef. 67 | Last quarter | Major periods 4:46 am · 5:13 pm | Medium |
| Mon 2 | 6:01 am · 5:36 pm | Low tide 3:29 am · 0.8 ft | High tide 11:00 am · 1.7 ft | Low tide 3:24 pm · 1.5 ft | High tide 9:03 pm · 1.9 ft | Coef. 59 | 41% | Major periods 5:39 am · 6:04 pm | Medium |
| Tue 3 | 6:01 am · 5:35 pm | Low tide 4:29 am · 1.0 ft | High tide 11:41 am · 1.8 ft | Low tide 5:12 pm · 1.5 ft | High tide 10:47 pm · 1.8 ft | Coef. 58 | 31% | Major periods 6:28 am · 6:51 pm | Medium |
▲ high tide · ▼ low tide · heights above chart datum (LAT). Major periods: start time; they last 2 hours. Activity: based on the moon phase and the solunar periods.
Where this tide comes from
Grand'Rivière has no station of its own, so we use the tide at Le Prêcheur (TICON-4), 5.6 mi away. On the open coast the difference is usually a few minutes and inches; inside estuaries, rivers and enclosed bays it can be much larger.
Station data attribution: Slackwater database (https://github.com/openwatersio/slackwater-database). Source: Hart-Davis, M., Dettmering, D., Seitz, F. (2025), TICON-4: TIdal CONstants based on GESLA-4 sea-level records, SEANOE, https://doi.org/10.17882/109129. Licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Modified: see https://github.com/openwatersio/slackwater-database#modifications-to-source-data
The sea at Grand'Rivière
Sea stateSea state: slight
The waves you may find
- Most commonMost common1.4 ft
- Significant2.9 ft
- Highest expectedHighest5.8 ft
One wave in seven is higher than the significant height, and about 3 times a day one reaches 5.8 ft. Before heading out, expect waves of up to 5.8 ft.
Wind on the coast and offshore
Cross-offshore wind. The coast faces northwest and the wind comes off the land at an angle: calmer water near the shore, and bait and boats drift out to sea.
Wave height, next 7 daysWaves, next 7 days
Waves stay much the same all week. The biggest waves arrive on Thursday 29: 3.0 ft with a period of 8 s, from the northeast (slight).
Water temperature
Water temperature →Water temperature changes how fish behave: in very cold or very warm water they feed less. The water is steady these days, with no sudden changes.
Water warmer than normal for late October (+1.3 °F).
Satellite: NASA MUR (JPL MUR MEaSUREs, PO.DAAC), doi:10.5067/GHGMR-4FJ04. Sources and licenses
Water temperature →Forecast from Open-Meteo (CC BY 4.0) with models from ECMWF, NOAA, Météo-France, DWD, Copernicus Marine and CAMS. Updated at 11:56 pm (local time).
Nearest buoy
This is a real measurement of the sea, not a forecast. Data from Cerema, Collectivite Territoriale de Martinique, via the E.U. Copernicus Marine Service. Generated using E.U. Copernicus Marine Service Information (doi:10.48670/moi-00036).
Surf in Grand'Rivière today
Surf today
Poor- 1.3–2.1 ft surf at the shore, a fun size for most surfers
- 2.0 ft swell at 8 s from the northeast, short: weak, messy waves
- Light offshore wind (7 mph): it holds up and grooms the waves
- Falling tide (low tide at 10:15 am)
- Light: First light 5:37 am · sunrise 5:59 am · sunset 5:38 pm · last light 5:59 pm
- Tide: high 5:29 am (1.7 ft), low 10:15 am (1.3 ft), high 4:18 pm (2.2 ft) and low 11:56 pm (0.4 ft). Every break has its own tide: some work at low tide and others at high tide. The tide doesn’t change the score here.
- Water at 84.9 °F: boardshorts or a swimsuit and a rash guard.
- Energy: 41 kJ · Low power
Today’s surf at a glance
The best window, 7:00 am to 11:00 am, has light offshore wind, though with a short-period swell.
An estimate for this stretch of coast, not for a specific break: every beach or reef works its own way (its tide, bottom and angle). Check it when you get there.
Follow the flags and the lifeguards, and don’t paddle out if the surf is above your level: this score is a guide, not a substitute for what you see when you get there.
Diving in Grand'Rivière today
Diving and snorkeling today
Likely visibility: good- Slack water around low tide (10:15 am): little current from 9:40 am to 10:40 am
- 1.9 ft swell at 8 s from the northeast: some surge on the bottom
- Light offshore wind (9 mph)
- 0.2 mph current toward the south-southeast, weak (model)
- Sun high: more light underwater
- Slack water today: high tide 5:29 am (5:10–5:50 am), low tide 10:15 am (9:40–10:40 am), high tide 4:18 pm (4:00–4:33 pm) and low tide 11:56 pm (11:40 pm–12:11 am)
- Likely visibility: good. Swell (up to 2.3 ft at 9 s) over the last few days has stirred up the water. Based on the last 24 hours of data.
- Water at 84.9 °F: a shorty or a rash guard.
- Snorkeling: doable, with some waves or wind.
- Night dive: dark from 5:59 pm. Waning gibbous (91%), rising at 7:53 pm: a bright night.
Your diving day at a glance
The best window, 8:50 am to 11:20 am, combines slack water at low tide, light wind, weak current and the sun high. Also good from 3:50 pm to 4:50 pm, with slack water at high tide, light wind and weak current.
Slack water comes from the tide: in inlets, channels and between islands the water can keep running for an hour or two after. Ask the local dive shop.
Never dive alone and check with the local dive shop: this rating is a guide, not a substitute for a professional.
Dive sites, wrecks and dive shops nearby
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- Site de Plongée La Perle 3.9 mi
- Turtle Dove 6.9 mi
- Dalhia 9.2 mi
- Wreck 6.8 mi
- Wreck 8.8 mi
- Wreck 8.9 mi
- Wreck 9.2 mi
- Wreck 9.3 mi
- Wreck 9.9 mi
- Wreck 10 mi
- Wreck 10 mi
- Réserve naturelle marine du Prêcheur - Albert Falco 4.3 mi
Within 12 mi. Some may be missing or closed; marine reserves usually need a permit. Open the map on OpenStreetMap · Missing one? Add it to OpenStreetMap
Wreck and reef positions are approximate and not for navigation; a wreck’s depth runs from the top of the hull to the seabed.
Sites: © OpenStreetMap contributors (ODbL). Wrecks: EMODnet Human Activities (AND-International), from UK Hydrographic Office data, CC BY 4.0. Contains public sector information licensed under the Open Government Licence v3.0.
Weather in Grand'Rivière
Now in Grand'Rivière
- Low / high
- 77 / 86 °F
- Rain
- 0.15 in · 95%
- Clouds
- 16%
- Humidity
- 86%
- Dew pointDew point
- 74 °F
- Visibility
- 15 mi
- UV indexUV
- 0 · low
- Air qualityAir
- Fair · 38
- Saharan dust
- No
Pressure and fishing
- ↗ RisingRising Anglers say fish bite less for a while
- → SteadySteady · now Anglers expect normal activity
- ↘ FallingFalling Anglers say fish feed more before the change
Steady now (−0.02 inHg in 3 hours). Over the next 48 hours: −0.06 inHg. Steady pressure: anglers expect normal activity. Fast changes, either way, tend to affect fishing.
Today, hour by hourHour by hour
Bars: mean wind. Dashed line: gusts. Arrows point where the wind blows to.
| Time | 12:00 am | 3:00 am | 6:00 am | 9:00 am | 12:00 pm | 3:00 pm | 6:00 pm | 9:00 pm |
|---|---|---|---|---|---|---|---|---|
| Sky | Overcast | Light drizzle | Light drizzle | Drizzle | Light drizzle | Light drizzle | Light drizzle | Clear |
| Temperature | 79° | 77° | 78° | 84° | 86° | 85° | 82° | 80° |
| Wind (mph) | 5 E | 4 E | 5 E | 8 E | 9 E | 8 E | 7 E | 6 E |
| Gusts | 10 | 8 | 10 | 19 | 23 | 21 | 17 | 13 |
| Waves | 2.9 ft | 2.8 ft | 2.8 ft | 2.7 ft | 2.7 ft | 2.8 ft | 2.8 ft | 2.9 ft |
| Rain | 0.00 in | 0.00 in | 0.00 in | 0.02 in | 0.01 in | 0.00 in | 0.00 in | 0.00 in |
- 12:00 am 79° 6 E 2.9 ft
- 3:00 am 78° 6 E 3.0 ft
- 6:00 am 79° 7 E 3.0 ft
- 9:00 am 84° 9 E 3.0 ft
- 12:00 pm 87° 10 E 3.0 ft
- 3:00 pm 85° 8 E 3.0 ft
- 6:00 pm 81° 6 E 2.8 ft
- 9:00 pm 79° 6 E 2.6 ft
Next 14 daysComing days
| Day | Sky | Low / high | Max wind | Max wave | High tides |
|---|---|---|---|---|---|
| Today · 28 | 77 / 86 °F | 9 mph E | 2.9 ft | 5:29 am · 4:18 pm | |
| Thu 29 | 77 / 87 °F | 10 mph E | 3.0 ft | 6:21 am · 5:02 pm | |
| Fri 30 | 76 / 86 °F | 10 mph E | 2.6 ft | 7:21 am · 5:50 pm | |
| Sat 31 | 76 / 87 °F | 8 mph E | 2.6 ft | 8:35 am · 6:43 pm | |
| Sun 1 | 78 / 85 °F | 9 mph E | 2.7 ft | 9:58 am · 7:45 pm | |
| Mon 2 | 78 / 85 °F | 10 mph ESE | 2.6 ft | 11:00 am · 9:03 pm | |
| Tue 3 | 76 / 86 °F | 11 mph ESE | 2.8 ft | 11:41 am · 10:47 pm | |
| Wed 4 | 76 / 86 °F | 9 mph ESE | 2.6 ft | 12:12 pm | |
| Thu 5 | 76 / 86 °F | 8 mph E | 2.5 ft | 12:44 am · 12:39 pm | |
| Fri 6 | 76 / 87 °F | 8 mph ESE | 2.4 ft | 2:09 am · 1:05 pm | |
| Sat 7 | 75 / 86 °F | 9 mph E | 1.8 ft | 3:10 am · 1:31 pm | |
| Sun 8 | 77 / 85 °F | 8 mph E | 1.7 ft | 3:58 am · 1:59 pm | |
| Mon 9 | 76 / 86 °F | 7 mph E | 1.4 ft | 4:39 am · 2:30 pm | |
| Tue 10 | 76 / 83 °F | 7 mph ESE | 2.0 ft | 5:15 am · 3:04 pm |
- Thu 29 Light drizzle 77° / 87° 3.0 ft
- Fri 30 Drizzle 76° / 86° 2.6 ft
- Sat 31 Drizzle 76° / 87° 2.6 ft
- Sun 1 Heavy drizzle 78° / 85° 2.7 ft
- Mon 2 Drizzle 78° / 85° 2.6 ft
- Tue 3 Drizzle 76° / 86° 2.8 ft
- Wed 4 Light drizzle 76° / 86° 2.6 ft
Each day comes from the best model covering this spot: regional ones first (HRRR and NBM in the U.S., AROME, ICON-EU), then ECMWF; day 16, NOAA GFS. Waves: Météo-France up to day 10, then ECMWF WAM, coarser and further offshore. High tides: our own tide calculation.
- Normal Today, warmer than normal for late October (+2.7 °F; normal high: 84 °F). Climate by month →
Forecast from Open-Meteo (CC BY 4.0) with models from ECMWF, NOAA, Météo-France, DWD, Copernicus Marine and CAMS. Updated at 11:56 pm (local time).
The sun in Grand'Rivière
Sunrise and sunset
- First light 5:12 am
- Full dark 6:25 pm
- Civil dawn 5:37 am
- Civil dusk 5:59 pm
- Solar noon 11:48 am (62° high)
- Daylight 11 h 38 min (−1 min)
- Evening golden hour 5:08 pm
- Full dark 6:25 pm
Golden hour and the day-night map
Today the sun is 92,355,709 mi away and looks 32′ 11″ across.
The moon in Grand'Rivière
Moon phase and position
Today the moon is 226,429 mi away and looks 32′ 47″ across.
Solunar periods
Today's activity: medium- 12:37–2:37 am Major · the moon passes overhead · high activity
- 1:09–3:09 pm Major · the moon passes underfoot · high activity
- 7:54–8:54 am Minor · moonset · medium activity
- 7:23–8:23 pm Minor · moonrise · medium activity
According to solunar theory, fish feed more when the moon passes overhead or underfoot (major periods, about 2 h) and when it rises or sets (minor periods, 1 h). It works best around new and full moon.
Upcoming moon phases
2026 moon calendar →- Last quarter Sun, Nov 1 · 4:29 pmNov 1 in 4 days
- New moon Mon, Nov 9 · 3:03 amNov 9 in 12 days
- First quarter Tue, Nov 17 · 7:48 amNov 17 in 20 days
- Full moon Tue, Nov 24 · 10:54 amNov 24 in 27 days
Perigee on October 28, 226,426 mi away, coinciding with the spring tides from October 26 to 28: they will be stronger than usual.
Where to fish in Grand'Rivière
Piers, ramps and tackle shops nearby
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
Within 9.3 mi. A spot may be missing or closed. Open the map on OpenStreetMap · Missing one? Add it to OpenStreetMap
Spots: © OpenStreetMap contributors (ODbL) and Overture Maps.
Water depth
Deepens quicklyThe bottom deepens quickly: 33 ft of water 950 ft from shore. It reaches 164 ft at 0.45 mi.
From the shoreline out to sea, heading northwest.
How far from shore
- 16 ft deep430 ft
- 33 ft deep950 ft
- 66 ft deep0.3 mi
- 164 ft deep0.45 mi
For fishing, swimming and diving
- Shore fishing. Deep water close in: about 13 ft just 330 ft out. Good for casting from rocks, jetties or the beach itself; current and surf hit harder here.
- Swimming. The bottom drops quickly near the shore and you are soon out of your depth. Keep an eye on kids and weak swimmers.
- Diving. Shore diving works here: 33 ft at 950 ft and 66 ft at 0.3 mi from shore.
Right by the shore the bottom may drop even faster than shown.
Source: EMODnet Bathymetry DTM 2024 (CC BY 4.0), cells of about 380 ft; depth at the lowest astronomical tide. For reference only: not for navigation or anchoring.
Nearest lighthouse
Precheur Point 5.9 mi southwest
- Light
- A red flash every 5 s · Fl R 5s
- Range
- 18 nautical miles (21 mi)
- Light height
- 72 ft above sea level
- Tower height
- 39 ft
Light details: NGA List of Lights (USA); the rest from Wikidata. For reference only: not for navigation. Wikidata · Sources and licenses
Tides near Grand'RivièreTides nearby
- Basse-Pointe4.3 mi
- Le Lorrain8.8 mi
- Saint-Pierre9.0 mi
- Sainte-Marie14 mi
- La Trinité17 mi
- Fort-de-France20 mi
- Le Robert21 mi
- Le Lamentin22 mi
- Ducos25 mi
- Les Trois-Îlets25 mi
Grand'Rivière at a glance
- Town or city of about 666 people. Coordinates: 14.874° N, 61.180° W.
- It is 20 mi north of Fort-de-France, the main place in Martinique. The sun rises 1 min later and sets at the same time than in Fort-de-France.
- The nearest tide station, Le Prêcheur, is 5.6 mi to the southwest.
- Its coast faces northwest.
- Beaches and harbors nearby: Nord Plage (2.2 mi).
Questions about Grand'RivièreQuestions
What time is high tide today in Grand'Rivière?
Today in Grand'Rivière there are high tides at 5:29 am (1.7 ft) and 4:18 pm (2.2 ft) and low tides at 10:15 am and 11:56 pm. Tide coefficient 104.
What time is sunset today in Grand'Rivière?
At 5:38 pm. There is light until the end of civil twilight, at 5:59 pm.
What time is sunrise tomorrow in Grand'Rivière?
At 6:00 am. First light comes at 5:12 am.
What phase is the moon today?
Waning gibbous, 91% illuminated. New moon on Mon, Nov 9 · 3:03 am.
When are the next spring tides?
From October 26 to 28, together with the lunar perigee: they will be stronger than usual.
What are today's solunar periods?
Major 12:37–2:37 am, Minor 7:54–8:54 am, Major 1:09–3:09 pm, Minor 7:23–8:23 pm. Today's activity is medium.
What's the weather like today in Grand'Rivière?
Drizzle, from 77 °F to 86 °F, with a light breeze from the east (6 mph) and a 95% chance of rain.
How is the sea today in Grand'Rivière?
Slight (Douglas 3): 2.9 ft waves with a period of 8.0 s from the northeast. The water is 84.9 °F.
When is the best time to visit Grand'Rivière?
The best time to visit Grand'Rivière is from February to April: highs of 80 °F to 83 °F, about 8 rainy days a month and 8 hours of sunshine a day.
Can I use this data for navigation?
No. These are predictions for fishing and leisure; for navigation, use the official publications.
Where this data comes from
Tide: Le Prêcheur station, with constants from TICON-4 (Hart-Davis, Dettmering and Seitz, 2025, SEANOE), licensed CC BY 4.0, via Slackwater database (changes). Sun and moon: our own calculation with astronomy-engine. Places: GeoNames (CC BY 4.0). Coastline: © OpenStreetMap contributors (ODbL).