Port Erroll tides today
- Tide now 13.8 ft ↑ rising · high 2:51 am (14.7 ft)
- Best time to fish 3:30–4:10 pm great day · 9/10
- Beach day Not today Not a beach day · 0/10
- Waves · water 2.2 ft · 54 °F slight · 4.6 s from the south
- Wind · air 4 mph · 48 °F from the SW, gusts 8 · partly cloudy
- Surf today 0.8–1.2 ft Poor day · 0/10 · 7:00–11:00 am
- Sun 7:12 am–4:29 pm 9 h 16 min of daylight
- Moon 85% · 5:32 pm waning gibbous · rises at 5:32 pm
Today in Port Erroll there are high tides at 2:51 am (14.7 ft) and 3:14 pm (14.2 ft) and low tides at 8:52 am and 9:15 pm. Tide coefficient 93. Right now the tide is rising toward the high tide at 2:51 am. The sun rises at 7:12 am and sets at 4:29 pm: 9 h 16 min of daylight. The moon is 85% illuminated (waning gibbous) and rises at 5:32 pm. Major solunar periods run from 1:33 am to 3:33 am and from 2:05 pm to 4:05 pm. The next spring tides arrive from November 9 to 11. The sea is slight, with 2.2 ft waves. There's a light breeze from the southwest (4 mph). Partly cloudy, 48 °F.
Fishing in Port Erroll today
Best time to fish
Solunar activity today: high- High tide at 3:14 pm, coefficient 90
- Major period 2:05–4:05 pm
- Sunset at 4:29 pm, golden hour from 3:30 pm
- Rising pressure (+0.25 inHg in 24 h), light onshore wind (12 mph) and some swell (2.0 ft waves) to stir the water
- Waning gibbous: a bit more activity than at the quarters
- Highest tide coefficient today: 93 (spring tides)
- A major period lines up with sunset
Your day at a glance
The best window, 3:30 pm to 4:10 pm, combines the 3:14 pm high tide, a major period, sunset, a light onshore breeze and some swell, though with rising pressure. Also worth a try from 1:50 am to 3:30 am, with the 2:51 am high tide, a major period and some swell, though with rising pressure.
Species with the most records nearby: haddock, whiting, Atlantic cod and European plaice. October is one of the months when these are seen most: Atlantic cod. What you can catch
Beach day in Port Erroll
Is it a beach day?
- Mostly sunny
- Calm for swimming: 2.0 ft waves
- Low tide at 8:52 am: more sand
- Feels like 52 °F: chilly for the beach
- Light cross-shore wind (12 mph)
- Water at 54 °F (very cold)
Today, hour by hour
- Swimming Calm · 2.0 ft
2.0 ft waves: calm for swimming. Low rip current risk. Always follow the lifeguard's flags.
- Water 54 °F
Very cold: ease in and keep swims short.
- Sun & sunscreen UV 1 · SPF 15
Max UV 1 (low): SPF 15 sunscreen.
- Wind 12 mph
Cross-shore breeze (12 mph).
- Tide & sand 8:52 am
Low tide at 8:52 am and 9:15 pm: that's when there's the most sand. High tide at 2:51 am and 3:14 pm. Coefficient 93 (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
Beaches near Port Erroll
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- Cruden Bay 0.5 mi · SW
Excellent water quality 2025 season, SEPA
- Collieston Beach 5.7 mi · SW
- Restrooms
- Parking
Good water quality 2025 season, SEPA
- Brickwork Beach 6.0 mi · N
- Parking
Excellent water quality 2025 season, SEPA
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).
UK bathing water quality: SEPA. Contains public sector information licensed under the Open Government Licence v3.0. Full attribution.
Webcams near Port Erroll
Webcams provided by windy.com — add a webcam
Tides in Port Erroll
Today's high and low tides
- ▲ Next high tide 2:51 am 14.7 ft · coef. 93
- ▼ Low tide 8:52 am 3.0 ft
- ▲ High tide 3:14 pm 14.2 ft · coef. 90
- ▼ Low tide 9:15 pm 2.8 ft
↑ Rising The tide is rising. 1 h 11 min to high tide at 2:51 am.
Tide coefficient 93 for the 2:51 am high tide and 90 for the 3:14 pm high tide. Spring tides. The water rises and falls 11.9 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 September 29 (15.2 ft) and the lowest, on August 14 (0.9 ft).
Semidiurnal: two high and two low tides a day, of similar height.
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 27 to 28 (coefficient 96, 12.7 ft range). The smallest, on October 19 (coefficient 32, 4.8 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 | 7:12 am · 4:29 pm | High tide 2:51 am · 14.7 ft | Low tide 8:52 am · 3.0 ft | High tide 3:14 pm · 14.2 ft | Low tide 9:15 pm · 2.8 ft | Coef. 93 | 85% | Major periods 1:33 am · 2:05 pm | High |
| Fri 30 | 7:15 am · 4:27 pm | High tide 3:43 am · 14.2 ft | Low tide 9:37 am · 3.8 ft | High tide 4:02 pm · 13.8 ft | Low tide 10:05 pm · 3.2 ft | Coef. 86 | 76% | Major periods 2:38 am · 3:10 pm | Medium |
| Sat 31 | 7:17 am · 4:24 pm | High tide 4:41 am · 13.5 ft | Low tide 10:28 am · 4.8 ft | High tide 4:57 pm · 13.3 ft | Low tide 11:04 pm · 3.9 ft | Coef. 75 | 65% | Major periods 3:41 am · 4:11 pm | Medium |
| Sun 1 | 7:19 am · 4:22 pm | High tide 5:46 am · 12.7 ft | Low tide 11:30 am · 5.8 ft | High tide 5:59 pm · 12.8 ft | — | Coef. 63 | Last quarter | Major periods 4:39 am · 5:07 pm | Low |
| Mon 2 | 7:21 am · 4:20 pm | Low tide 12:17 am · 4.4 ft | High tide 7:00 am · 12.2 ft | Low tide 12:51 pm · 6.4 ft | High tide 7:12 pm · 12.4 ft | Coef. 55 | 43% | Major periods 5:33 am · 5:59 pm | Medium |
| Tue 3 | 7:24 am · 4:17 pm | Low tide 1:44 am · 4.5 ft | High tide 8:20 am · 11.9 ft | Low tide 2:21 pm · 6.4 ft | High tide 8:31 pm · 12.4 ft | Coef. 55 | 32% | Major periods 6:23 am · 6:46 pm | Medium |
| Wed 4 | 7:26 am · 4:15 pm | Low tide 3:05 am · 4.2 ft | High tide 9:35 am · 12.1 ft | Low tide 3:35 pm · 5.8 ft | High tide 9:43 pm · 12.7 ft | Coef. 62 | 23% | Major periods 7:09 am · 7:31 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
Port Erroll has no station of its own, so we use the tide at Aberdeen (Environment Agency), 21 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: This uses Environment Agency tide gauge data from the real-time data API (Beta): Aberdeen (E70724), https://environment.data.gov.uk/flood-monitoring/id/stations/E70724. Contains public sector information licensed under the Open Government Licence v3.0 (https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/). Modified: harmonic constants fitted by TidePlanet from the 15-minute sea levels of 2025-10-29 to 2026-10-22 (356 days).
The sea at Port Erroll
Sea stateSea state: slight
The waves you may find
- Most commonMost common1.1 ft
- Significant2.2 ft
- Highest expectedHighest4.6 ft
One wave in seven is higher than the significant height, and about 3 times a day one reaches 4.6 ft. Before heading out, expect waves of up to 4.6 ft.
Wind on the coast and offshore
Cross-offshore wind. The coast faces southeast 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 Friday 30: 3.1 ft with a period of 4 s, from the south (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 1:40 am (local time).
Surf in Port Erroll today
Surf today
Poor- 0.8–1.2 ft surf at the shore, small: good for learning or a longboard
- 1.1 ft swell at 4 s from the south-southeast, short: weak, messy waves
- Almost no wind (3 mph): glassy water
- Falling tide (low tide at 8:52 am)
- Light: First light 6:31 am · sunrise 7:12 am · sunset 4:29 pm · last light 5:10 pm
- Tide: high 2:51 am (14.7 ft), low 8:52 am (3.0 ft), high 3:14 pm (14.2 ft) and low 9:15 pm (2.8 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 53.6 °F: a 5/4 fullsuit with booties (and a hood if it’s windy).
- Energy: 3 kJ · Low power
Today’s surf at a glance
The best window, 7:00 am to 11:00 am, has glassy water, though with small waves and 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 Port Erroll today
Diving and snorkeling today
Likely visibility: good- Slack water around high tide (3:14 pm): little current from 2:50 pm to 3:40 pm
- 1.0 ft swell at 4 s from the south-southeast: barely any surge
- Light cross-shore wind (12 mph)
- 0.5 mph current toward the south-southwest, weak (model)
- Daylight
- Slack water today: high tide 2:51 am (2:30–3:10 am), low tide 8:52 am (8:30–9:10 am), high tide 3:14 pm (2:50–3:40 pm) and low tide 9:15 pm (8:50–9:40 pm)
- Likely visibility: good. Swell (up to 4.2 ft at 6 s) over the last few days has stirred up the water. Based on the last 24 hours of data.
- Water at 53.6 °F: a 7 mm semi-dry suit, with hood, gloves and booties.
- Snorkeling: doable, with some waves or wind.
- Night dive: dark from 5:10 pm. Waning gibbous (85%), rising at 5:32 pm: a bright night.
Your diving day at a glance
The best window, 2:30 pm to 4:00 pm, combines slack water at high tide, little swell, light wind and weak current. Also worth a look from 8:10 am to 10:20 am, with slack water at low tide, little swell, light wind and the sun high, though with 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
- Maria W 1.6 mi
- Xenia 1.8 mi
- Contender 3.1 mi
- Zitella 3.2 mi
- Integrity 3.6 mi
- Cairnavon 4.3 mi
- Constant Star 5.3 mi
- Santa Catarina 5.6 mi
- Magician 7.7 mi
- Karemma 9.0 mi
- Wreck 3.4 mi
- Wreck 4.0 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 Port Erroll
Now in Port Erroll
- Low / high
- 45 / 56 °F
- Rain
- 0.00 in · 0%
- Clouds
- 78%
- Humidity
- 89%
- Dew pointDew point
- 45 °F
- Visibility
- 16 mi
- UV indexUV
- 0 · low
- Air qualityAir
- Good · 18
- Saharan dust
- No
- Pollen
- None
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). Over the next 48 hours: +0.23 inHg. 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 | Partly cloudy | Partly cloudy | Overcast | Clear sky | Mainly clear | Overcast | Overcast | Overcast |
| Temperature | 49° | 48° | 46° | 47° | 54° | 55° | 52° | 52° |
| Wind (mph) | 5 SSW | 2 WSW | 3 WSW | 2 W | 7 S | 12 SSW | 11 SSW | 9 S |
| Gusts | 10 | 6 | 4 | 5 | 13 | 20 | 20 | 16 |
| Waves | 2.4 ft | 2.0 ft | 1.7 ft | 1.4 ft | 1.5 ft | 2.0 ft | 1.8 ft | 1.6 ft |
| Rain | 0.00 in | 0.00 in | 0.00 in | 0.00 in | 0.00 in | 0.00 in | 0.00 in | 0.00 in |
- 3:00 am 48° 2 WSW 2.0 ft
- 6:00 am 46° 3 WSW 1.7 ft
- 9:00 am 47° 2 W 1.4 ft
- 12:00 pm 54° 7 S 1.5 ft
- 3:00 pm 55° 12 SSW 2.0 ft
- 6:00 pm 52° 11 SSW 1.8 ft
- 9:00 pm 52° 9 S 1.6 ft
- 12:00 am 53° 12 S 2.0 ft
Next 14 daysComing days
| Day | Sky | Low / high | Max wind | Max wave | High tides |
|---|---|---|---|---|---|
| Today · 29 | 45 / 56 °F | 12 mph SSW | 2.4 ft | 2:51 am · 3:14 pm | |
| Fri 30 | 53 / 54 °F | 20 mph S | 3.1 ft | 3:43 am · 4:02 pm | |
| Sat 31 | 52 / 56 °F | 11 mph WSW | 2.6 ft | 4:41 am · 4:57 pm | |
| Sun 1 | 45 / 54 °F | 14 mph NW | 2.0 ft | 5:46 am · 5:59 pm | |
| Mon 2 | 44 / 52 °F | 10 mph NW | 1.3 ft | 7:00 am · 7:12 pm | |
| Tue 3 | 38 / 52 °F | 4 mph NNE | 1.1 ft | 8:20 am · 8:31 pm | |
| Wed 4 | 34 / 47 °F | 6 mph W | 0.9 ft | 9:35 am · 9:43 pm | |
| Thu 5 | 33 / 43 °F | 4 mph SW | 0.6 ft | 10:34 am · 10:42 pm | |
| Fri 6 | 35 / 45 °F | 7 mph SSW | 1.1 ft | 11:21 am · 11:30 pm | |
| Sat 7 | 35 / 45 °F | 7 mph SW | 1.6 ft | 12:00 pm | |
| Sun 8 | 39 / 45 °F | 8 mph WNW | 1.8 ft | 12:12 am · 12:35 pm | |
| Mon 9 | 43 / 50 °F | 11 mph SSE | 3.8 ft | 12:49 am · 1:08 pm | |
| Tue 10 | 48 / 51 °F | 7 mph NW | 3.2 ft | 1:25 am · 1:41 pm | |
| Wed 11 | 48 / 53 °F | 13 mph ESE | 6.2 ft | 2:01 am · 2:14 pm |
- Fri 30 Light rain 53° / 54° 3.1 ft
- Sat 31 Light rain 52° / 56° 2.6 ft
- Sun 1 Light rain 45° / 54° 2.0 ft
- Mon 2 Light drizzle 44° / 52° 1.3 ft
- Tue 3 Light drizzle 38° / 52° 1.1 ft
- Wed 4 Overcast 34° / 47° 0.9 ft
- Thu 5 Overcast 33° / 43° 0.6 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.
- The models Partly agree · medium confidence: unsure about rain tomorrow. See the models →
- Normal Today, warmer than normal for late October (+5.4 °F; normal high: 50 °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 1:40 am (local time).
The sun in Port Erroll
Sunrise and sunset
- First light 5:46 am
- Full dark 5:55 pm
- Civil dawn 6:31 am
- Civil dusk 5:10 pm
- Solar noon 11:51 am (19° high)
- Daylight 9 h 16 min (−5 min)
- Evening golden hour 3:30 pm
- Full dark 5:55 pm
Golden hour and the day-night map
Today the sun is 92,335,426 mi away and looks 32′ 11″ across.
The moon in Port Erroll
Moon phase and position
Today the moon is 226,641 mi away and looks 32′ 45″ across.
Solunar periods
Today's activity: high- 1:33–3:33 am Major · the moon passes overhead · high activity
- 2:05–4:05 pm Major · the moon passes underfoot · high activity
- 12:08–1:08 pm Minor · moonset · medium activity
- 5:02–6:02 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 · 8:29 pmNov 1 in 3 days
- New moon Mon, Nov 9 · 7:03 amNov 9 in 11 days
- First quarter Tue, Nov 17 · 11:48 amNov 17 in 19 days
- Full moon Tue, Nov 24 · 2:54 pmNov 24 in 26 days
Next perigee (the moon at its closest to Earth): November 25, 223,281 mi away.
Where to fish in Port Erroll
Piers, ramps and tackle shops nearby
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- Tanker Jetty 6.0 mi
- Albert Quay 6.5 mi
- North Breakwater 6.5 mi
- Jetty 7.0 mi
- Boat ramp 0.2 mi
- Boat ramp 6.9 mi
- Boat ramp 7.3 mi
- Boddam Harbour 4.9 mi
- South Port Harbour 6.0 mi
- Merchants Quay 6.6 mi
- Elkanah Fishing Ltd 4.7 mi
- Fishing Supplies 6.8 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
Gentle slopeThe bottom slopes gently: 16 ft deep 0.25 mi from shore and 33 ft at 0.6 mi. It reaches 164 ft at 2.6 mi.
From the shoreline (0.45 mi from Port Erroll) out to sea, heading southeast.
How far from shore
- 16 ft deep0.25 mi
- 33 ft deep0.6 mi
- 66 ft deep1 mi
- 164 ft deep2.6 mi
For fishing, swimming and diving
- Shore fishing. Shallow, gradual bottom (16 ft at 0.25 mi): cast far from the beach and fish the high tide, when there is more water close in.
- Swimming. A very gentle way in with plenty of shallow water, good for kids. At low tide the water can be far out.
- Diving. 33 ft deep 0.6 mi from shore; 66 ft is far out (1 mi): for deeper dives, go by boat.
Rough estimate: here the data comes in cells of about 0.3 mi and misses details near shore (rocks, sandbars, small coves).
Source: EMODnet Bathymetry DTM 2024, here using the GEBCO grid (CC BY 4.0), cells of about 0.3 mi; depth at the lowest astronomical tide. For reference only: not for navigation or anchoring.
Nearest lighthouse
Buchan Ness Lighthouse 4.7 mi northeast
- Light
- A white flash every 5 s · Fl W 5s
- Range
- 18 nautical miles (21 mi)
- Light height
- 131 ft above sea level
- Tower height
- 115 ft
- Built
- 1827
Light details: NGA List of Lights (USA); the rest from Wikidata. For reference only: not for navigation. Wikipedia · Wikidata · Sources and licenses
Tides near Port ErrollTides nearby
- Cruden Bay0.4 mi
- Boddam4.6 mi
- Peterhead6.7 mi
- Newburgh8.9 mi
- Saint Fergus10 mi
- Balmedie14 mi
- Saint Combs17 mi
- Dubford17 mi
- Bridge of Don18 mi
- Old Aberdeen20 mi
Port Erroll at a glance
- Town or city of about 1,620 people. Coordinates: 57.414° N, 1.846° W.
- It is 6.7 mi south of Peterhead, the main place in Aberdeenshire. The sun rises at the same time and sets 1 min later than in Peterhead.
- The nearest tide station, Aberdeen, is 21 mi to the southwest.
- Its coast faces southeast.
Questions about Port ErrollQuestions
What time is high tide today in Port Erroll?
Today in Port Erroll there are high tides at 2:51 am (14.7 ft) and 3:14 pm (14.2 ft) and low tides at 8:52 am and 9:15 pm. Tide coefficient 93.
What time is sunset today in Port Erroll?
At 4:29 pm. There is light until the end of civil twilight, at 5:10 pm.
What time is sunrise tomorrow in Port Erroll?
At 7:15 am. First light comes at 5:48 am.
What phase is the moon today?
Waning gibbous, 85% illuminated. New moon on Mon, Nov 9 · 7:03 am.
When are the next spring tides?
From November 9 to 11.
What are today's solunar periods?
Major 1:33–3:33 am, Minor 12:08–1:08 pm, Major 2:05–4:05 pm, Minor 5:02–6:02 pm. Today's activity is high.
What's the weather like today in Port Erroll?
Overcast, from 45 °F to 56 °F, with a light breeze from the southwest (4 mph) and a 0% chance of rain.
How is the sea today in Port Erroll?
Slight (Douglas 3): 2.2 ft waves with a period of 4.6 s from the south. The water is 53.6 °F.
When is the best time to visit Port Erroll?
The best time to visit Port Erroll is from July to August: highs of 65 °F to 65 °F, about 13 rainy days a month and 5 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: Aberdeen tide gauge (UK National Tide Gauge Network). This uses Environment Agency tide gauge data from the real-time data API (Beta), under the Open Government Licence v3.0; constants fitted by TidePlanet from a year of its readings. Sun and moon: our own calculation with astronomy-engine. Places: GeoNames (CC BY 4.0). Coastline: © OpenStreetMap contributors (ODbL).