Blue Lagoon today
- Beach tomorrow 11:00 am–1:00 pm Poor beach day · 4/10
- Tide now 7.0 ft ↓ falling · low 4:24 pm (2.1 ft)
- Best time to fish 3:20–4:50 pm good day · 7/10
- Waves · water 0.8 ft · 87 °F smooth · 6.0 s from the northwest
- Wind · air 3 mph · 83 °F from the W, gusts 10 · light drizzle
- Sun 6:55 am–6:57 pm 12 h 2 min of daylight
- Moon 88% · 10:04 pm waning gibbous · rises at 10:04 pm
- Best time to dive 6:30–7:10 pm average day · 6/10
Today in Blue Lagoon there are high tides at 9:30 am (8.0 ft) and 9:37 pm (6.2 ft) and low tides at 3:18 am and 4:24 pm. Tide coefficient 92. Right now the tide is falling toward the low tide at 4:24 pm. The sun rises at 6:55 am and sets at 6:57 pm: 12 h 2 min of daylight. The moon is 88% illuminated (waning gibbous) and rises at 10:04 pm. Major solunar periods run from 2:20 am to 4:20 am and from 2:52 pm to 4:52 pm. The next spring tides arrive from October 27 to 29. The sea is smooth, with 0.8 ft waves. There's a light air from the west (3 mph). Light drizzle, 83 °F.
Beach day in Blue Lagoon
Is it a beach day?
- Feels like 96 °F: hot
- Onshore breeze (4 mph)
- Calm for swimming: 0.9 ft waves
- Water at 87 °F (very warm)
- Low tide at 4:24 pm: more sand
- Cloudy (97% cloud cover)
Thunderstorms during beach hours: get out of the water and off the sand as soon as you hear thunder.
Today, hour by hour
- Swimming Calm · 0.9 ft
0.9 ft waves: calm for swimming. Low rip current risk. Always follow the lifeguard's flags.
- Water 87 °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 12:00–1:00 pm (very high UV).
- Wind 4 mph
Onshore breeze (4 mph).
- Tide & sand 4:24 pm
Low tide at 3:18 am and 4:24 pm: that's when there's the most sand. High tide at 9:30 am and 9:37 pm. Coefficient 92 (spring tides): little sand left at high tide.
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
About Blue LagoonThe beach
3.2 mi from Kampung Teluk Kemang. Tides, weather and sun in Kampung Teluk Kemang →
- Lifeguard
- Restrooms
- Showers
- Parking
Amenities from OpenStreetMap: some may be missing or out of date. See on OpenStreetMap · Fix on OpenStreetMap
Beaches near Blue Lagoon
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- Monkey Bay 0.4 mi · SW
- Pantai Cermin 0.6 mi · E
- Restrooms
- Parking
- Pantai Keramat 0.6 mi · S
- Sri Purnama Beach 1.1 mi · N
- Parking
- Teluk Kemang Beach 2.7 mi · N
- Restrooms
- Parking
- Cahaya Negeri Beach 5.3 mi · N
- Parking
- Saujana Beach 6.1 mi · N
- Restrooms
- Parking
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).
Webcams near Blue Lagoon
Webcams provided by windy.com — add a webcam
Fishing in Blue Lagoon today
Best time to fish
Solunar activity today: medium- Low tide at 4:24 pm
- Major period 2:52–4:52 pm
- Steady pressure (29.85 inHg), light cross-shore wind (4 mph) and calm sea (0.7 ft waves)
- Waning gibbous: a bit more activity than at the quarters
- Highest tide coefficient today: 92 (spring tides)
Your day at a glance
The best window, 3:20 pm to 4:50 pm, combines the 4:24 pm low tide and a major period. Also good from 9:30 pm to 10:30 pm, with the 9:37 pm high tide and moonrise.
Tides in Blue Lagoon
Today's high and low tides
- ▼ Low tide 3:18 am 1.0 ft
- ▲ High tide 9:30 am 8.0 ft · coef. 92
- ▼ Next low tide 4:24 pm 2.1 ft
- ▲ High tide 9:37 pm 6.2 ft · coef. 87
↓ Falling The tide is falling. 5 h 11 min to low tide at 4:24 pm.
Tide coefficient 92 for the 9:30 am high tide and 87 for the 9:37 pm high tide. Spring tides. The water rises and falls 7.0 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 October 27 (8.4 ft) and the lowest, on August 13 (0.2 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 99, 7.3 ft range). The smallest, from October 19 to 20 (coefficient 23, 2.7 ft).
Tide and solunar table · this week
| Day | Sun | Tide 1 | Tide 2 | Tide 3 | Tide 4 | Coef. | Moon | Major periods | Activity |
|---|---|---|---|---|---|---|---|---|---|
| Today, Thu 29 | 6:55 am · 6:57 pm | Low tide 3:18 am · 1.0 ft | High tide 9:30 am · 8.0 ft | Low tide 4:24 pm · 2.1 ft | High tide 9:37 pm · 6.2 ft | Coef. 92 | 88% | Major periods 2:20 am · 2:52 pm | Medium |
| Fri 30 | 6:55 am · 6:57 pm | Low tide 3:57 am · 1.1 ft | High tide 10:13 am · 7.5 ft | Low tide 5:04 pm · 2.5 ft | High tide 10:17 pm · 6.0 ft | Coef. 82 | 79% | Major periods 3:24 am · 3:56 pm | Medium |
| Sat 31 | 6:55 am · 6:57 pm | Low tide 4:39 am · 1.4 ft | High tide 11:05 am · 6.9 ft | Low tide 5:53 pm · 3.0 ft | High tide 11:01 pm · 5.7 ft | Coef. 69 | 69% | Major periods 4:28 am · 4:59 pm | Medium |
| Sun 1 | 6:55 am · 6:57 pm | Low tide 5:36 am · 1.8 ft | High tide 12:27 pm · 6.2 ft | Low tide 7:07 pm · 3.5 ft | High tide 11:58 pm · 5.3 ft | Coef. 53 | 58% | Major periods 5:28 am · 5:56 pm | Medium |
| Mon 2 | 6:55 am · 6:57 pm | Low tide 7:09 am · 2.2 ft | High tide 2:16 pm · 5.7 ft | Low tide 8:44 pm · 3.7 ft | — | Coef. 40 | Last quarter | Major periods 6:23 am · 6:49 pm | Medium |
| Tue 3 | 6:55 am · 6:57 pm | High tide 1:31 am · 5.1 ft | Low tide 8:58 am · 2.3 ft | High tide 3:46 pm · 5.6 ft | Low tide 10:09 pm · 3.6 ft | Coef. 40 | 36% | Major periods 7:14 am · 7:38 pm | Medium |
| Wed 4 | 6:55 am · 6:57 pm | High tide 3:25 am · 5.5 ft | Low tide 10:37 am · 2.0 ft | High tide 5:00 pm · 5.6 ft | Low tide 11:10 pm · 3.2 ft | Coef. 53 | 26% | Major periods 8:01 am · 8:24 pm | Low |
▲ 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
Blue Lagoon has no station of its own, so we use the tide at Tanjung Keling (TICON-4), 25 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 Blue Lagoon
Sea stateSea state: smooth
The waves you may find
- Most commonMost common0.4 ft
- Significant0.8 ft
- Highest expectedHighest1.6 ft
One wave in seven is higher than the significant height, and about 3 times a day one reaches 1.6 ft. Before heading out, expect waves of up to 1.6 ft.
Wind on the coast and offshore
Cross-onshore wind. The coast faces southwest and the wind comes in from the sea at an angle: a bit more surf at the shore and drift along the coast, toward land.
Wave height, next 7 daysWaves, next 7 days
Waves stay much the same all week. The biggest waves arrive on Thursday 29: 0.9 ft with a period of 6 s, from the northwest (smooth).
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 (+2.4 °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 11:14 am (local time).
Surf in Blue Lagoon today
Surf today
Flat- Barely any waves (0.7 ft sets): flat
- Almost no wind (4 mph): glassy water
- Falling tide (high tide at 9:37 pm)
It’s flat today: almost no waves reach this coast.
- Light: First light 6:34 am · sunrise 6:55 am · sunset 6:57 pm · last light 7:19 pm
- Tide: low 3:18 am (1.0 ft), high 9:30 am (8.0 ft), low 4:24 pm (2.1 ft) and high 9:37 pm (6.2 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 86.7 °F–88.0 °F: boardshorts or a swimsuit and a rash guard.
- Energy: 2 kJ · Low power
Today’s surf at a glance
The best window, 3:00 pm to 7:00 pm, has glassy water, though with barely any waves.
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 Blue Lagoon today
Diving and snorkeling today
Likely visibility: good- Tidal current running: mid-tide, the water is moving
- 0.6 ft swell at 5 s from the northwest: barely any surge
- Almost no wind
- 0.2 mph current toward the west, weak (model)
- Daylight
- Slack water today: low tide 3:18 am (2:50–3:50 am), high tide 9:30 am (9:10–9:50 am), low tide 4:24 pm (3:40–5:10 pm) and high tide 9:37 pm (9:20–9:52 pm)
- Likely visibility: good. Rain (0.44 in) over the last few days has stirred up the water. Based on the last 24 hours of data.
- Water at 86.7–88.0 °F: a shorty or a rash guard.
- Snorkeling: good, calm sea and light wind.
- Night dive: dark from 7:19 pm. Waning gibbous (88%), rising at 10:04 pm: a bright night.
Your diving day at a glance
The best window, 6:30 pm to 7:10 pm, combines little swell, light wind and weak current, though with tidal 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
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 Blue Lagoon
Now in Blue Lagoon
- Low / high
- 76 / 85 °F
- Rain
- 0.56 in · 100%
- Clouds
- 95%
- Humidity
- 82%
- Dew pointDew point
- 78 °F
- Visibility
- 15 mi
- UV indexUV
- 7 · high
- Air qualityAir
- Moderate · 59
- Saharan dust
- No
Pressure and fishing
- ↗ RisingRising · now Anglers say fish bite less for a while
- → SteadySteady Anglers expect normal activity
- ↘ FallingFalling Anglers say fish feed more before the change
Rising now (+0.05 inHg in 3 hours). It barely changes over the next 48 hours. Rising pressure: anglers say fish bite less for a while. 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 | Light drizzle | Overcast | Overcast | Light drizzle | Light drizzle | Showers | Drizzle | Light drizzle |
| Temperature | 77° | 76° | 76° | 78° | 84° | 82° | 77° | 77° |
| Wind (mph) | 3 ESE | 3 ESE | 3 SSW | 1 N | 3 W | 4 WNW | 3 NNW | 1 ESE |
| Gusts | 3 | 4 | 7 | 7 | 11 | 12 | 7 | 2 |
| Waves | 0.9 ft | 0.9 ft | 0.9 ft | 0.9 ft | 0.8 ft | 0.7 ft | 0.7 ft | 0.6 ft |
| Rain | 0.00 in | 0.00 in | 0.00 in | 0.01 in | 0.01 in | 0.14 in | 0.02 in | 0.00 in |
- 12:00 pm 84° 3 W 0.8 ft
- 3:00 pm 82° 4 WNW 0.7 ft
- 6:00 pm 77° 3 NNW 0.7 ft
- 9:00 pm 77° 1 ESE 0.6 ft
- 12:00 am 76° 3 ESE 0.6 ft
- 3:00 am 75° 1 E 0.6 ft
- 6:00 am 75° 1 NNE 0.7 ft
- 9:00 am 78° 3 ESE 0.8 ft
Next 14 daysComing days
| Day | Sky | Low / high | Max wind | Max wave | High tides |
|---|---|---|---|---|---|
| Today · 29 | 76 / 85 °F | 4 mph W | 0.9 ft | 9:30 am · 9:37 pm | |
| Fri 30 | 75 / 85 °F | 3 mph ESE | 0.9 ft | 10:13 am · 10:17 pm | |
| Sat 31 | 74 / 89 °F | 6 mph SE | 0.7 ft | 11:05 am · 11:01 pm | |
| Sun 1 | 75 / 87 °F | 5 mph ESE | 0.5 ft | 12:27 pm · 11:58 pm | |
| Mon 2 | 74 / 83 °F | 4 mph N | 0.3 ft | 2:16 pm | |
| Tue 3 | 73 / 87 °F | 5 mph ESE | 0.1 ft | 1:31 am · 3:46 pm | |
| Wed 4 | 74 / 86 °F | 4 mph E | 0.6 ft | 3:25 am · 5:00 pm | |
| Thu 5 | 73 / 88 °F | 4 mph S | 0.2 ft | 4:52 am · 5:52 pm | |
| Fri 6 | 73 / 88 °F | 3 mph E | 0.4 ft | 5:50 am · 6:30 pm | |
| Sat 7 | 74 / 80 °F | 2 mph ENE | 0.5 ft | 6:34 am · 6:59 pm | |
| Sun 8 | 73 / 87 °F | 5 mph SSE | 0.5 ft | 7:11 am · 7:24 pm | |
| Mon 9 | 73 / 78 °F | 3 mph SE | 0.7 ft | 7:45 am · 7:48 pm | |
| Tue 10 | 73 / 87 °F | 4 mph SW | 0.3 ft | 8:16 am · 8:14 pm | |
| Wed 11 | 74 / 80 °F | 4 mph NNE | 0.4 ft | 8:45 am · 8:43 pm |
- Fri 30 Drizzle 75° / 85° 0.9 ft
- Sat 31 Drizzle 74° / 89° 0.7 ft
- Sun 1 Drizzle 75° / 87° 0.5 ft
- Mon 2 Drizzle 74° / 83° 0.3 ft
- Tue 3 Heavy drizzle 73° / 87° 0.1 ft
- Wed 4 Heavy drizzle 74° / 86° 0.6 ft
- Thu 5 Heavy drizzle 73° / 88° 0.2 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.
- The models Partly agree · medium confidence: unsure about rain today. See the models →
- Outlook Next few weeks, compared with normal: a bit warmer, normal rain and a slightly warmer sea. See the outlook →
- Normal Today, cooler than normal for late October (−2.9 °F; normal high: 87 °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 11:14 am (local time).
The sun in Blue Lagoon
Sunrise and sunset
- First light 6:09 am
- Full dark 7:43 pm
- Civil dawn 6:34 am
- Civil dusk 7:19 pm
- Solar noon 12:56 pm (74° high)
- Daylight 12 h 2 min (−0 min)
- Evening golden hour 6:29 pm
- Full dark 7:43 pm
Golden hour and the day-night map
Today the sun is 92,342,399 mi away and looks 32′ 11″ across.
The moon in Blue Lagoon
Moon phase and position
Today the moon is 226,493 mi away and looks 32′ 46″ across.
Solunar periods
Today's activity: medium- 2:20–4:20 am Major · the moon passes overhead · high activity
- 2:52–4:52 pm Major · the moon passes underfoot · high activity
- 9:10–10:10 am Minor · moonset · medium activity
- 9:34–10:34 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 Mon, Nov 2 · 4:29 amNov 2 in 4 days
- New moon Mon, Nov 9 · 3:03 pmNov 9 in 11 days
- First quarter Tue, Nov 17 · 7:48 pmNov 17 in 19 days
- Full moon Tue, Nov 24 · 10:54 pmNov 24 in 26 days
Perigee on October 29, 226,426 mi away, coinciding with the spring tides from October 27 to 29: they will be stronger than usual.
Where to fish in Blue Lagoon
Piers, ramps and tackle shops nearby
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- Hibiscus 1.1 mi
- 12th Mile Jetty 2.0 mi
- Jeti memancing 8.9 mi
- Jetty 4.0 mi
- Breakwater for Tuanku Jaafar Power Station cool intake 9.2 mi
- Admiral Marina 4.3 mi
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
Drops off fastThe bottom drops off fast: the water is 33 ft deep just 550 ft from shore.
From the shoreline (0.65 mi from Blue Lagoon) out to sea, heading southwest.
How far from shore
- 16 ft deep420 ft
- 33 ft deep550 ft
- 66 ft deep850 ft
- 164 ft deepnot within 3.1 mi
For fishing, swimming and diving
- Shore fishing. 33 ft of water just 550 ft from shore: a good cast reaches deep water. 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 550 ft and 66 ft at 850 ft from shore.
Rough estimate: here the data comes in cells of about 0.3 mi and misses details near shore (rocks, sandbars, small coves).
Source: NOAA ETOPO 2022 (CC0), cells of about 0.3 mi; depth below mean sea level. For reference only: not for navigation or anchoring.
Nearest lighthouse
Cape Rachado Lighthouse 0.6 mi southwest
- Light
- 3 white flashes every 15 s · Fl(3) W 15s
- Range
- 23 nautical miles (26 mi)
- Light height
- 387 ft above sea level
- Tower height
- 79 ft
- Built
- 1817
Light details: NGA List of Lights (USA); the rest from Wikidata. For reference only: not for navigation. Wikipedia · Wikidata · Sources and licenses
Tides near Blue LagoonTides nearby
- Kampung Teluk Kemang3.2 mi
- Pasir Panjang5.6 mi
- Kampung Sirusa5.6 mi
- Kampung Kuala Linggi8.4 mi
- Port Dickson8.6 mi
- Kuala Sungai Baru13 mi
- Taman Sepang Putra18 mi
- Sungai Udang22 mi
- Kampung Tanjung Keling25 mi
- Kampung Tanjung Minyak26 mi
Blue Lagoon at a glance
- Beach. Coordinates: 2.415° N, 101.856° E.
- It is 8.6 mi southeast of Port Dickson, the main place in Negeri Sembilan. The sun rises at the same time and sets at the same time than in Port Dickson.
- 3.2 mi from Kampung Teluk Kemang.
- The nearest tide station, Tanjung Keling, is 25 mi to the southeast.
- Its coast faces southwest.
- Beaches and harbors nearby: Pantai Lagun Biru (0.1 mi), Pantai Dickson (2.9 mi).
Questions about Blue LagoonQuestions
Where is Blue Lagoon?
3.2 mi from Kampung Teluk Kemang, in Negeri Sembilan (Malaysia). The shore faces southwest.
What amenities does Blue Lagoon have?
According to OpenStreetMap: lifeguard, restrooms, showers and parking. Some may be missing or out of date, so ask at the beach.
What time is high tide today in Blue Lagoon?
Today in Blue Lagoon there are high tides at 9:30 am (8.0 ft) and 9:37 pm (6.2 ft) and low tides at 3:18 am and 4:24 pm. Tide coefficient 92.
What time is sunset today in Blue Lagoon?
At 6:57 pm. There is light until the end of civil twilight, at 7:19 pm.
What time is sunrise tomorrow in Blue Lagoon?
At 6:55 am. First light comes at 6:09 am.
What phase is the moon today?
Waning gibbous, 88% illuminated. New moon on Mon, Nov 9 · 3:03 pm.
When are the next spring tides?
From October 27 to 29, together with the lunar perigee: they will be stronger than usual.
What are today's solunar periods?
Major 2:20–4:20 am, Minor 9:10–10:10 am, Major 2:52–4:52 pm, Minor 9:34–10:34 pm. Today's activity is medium.
What's the weather like today in Blue Lagoon?
Showers, from 76 °F to 85 °F, with a light air from the west (3 mph) and a 100% chance of rain.
How is the sea today in Blue Lagoon?
Smooth (Douglas 2): 0.8 ft waves with a period of 6.0 s from the northwest. The water is 87.4 °F.
When is the best time to visit Blue Lagoon?
The best time to visit Blue Lagoon is from December to March and in August: highs of 87 °F to 89 °F, about 18 rainy days a month and 4 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: Tanjung Keling 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).