Ishigaki tides today
- Tide now 3.2 ft ↑ rising · high 9:27 am (4.9 ft)
- Best time to fish 2:20–3:50 pm good day · 8/10
- Beach day 12:00–5:00 pm Perfect beach day · 10/10
- Waves · water 3.1 ft · 80 °F slight · 6.8 s from the east-northeast
- Wind · air 10 mph · 79 °F from the NE, gusts 15 · partly cloudy
- Surf today 1.3–2.0 ft Poor day · 2/10 · 2:00–6:00 pm
- Sun 6:48 am–6:06 pm 11 h 18 min of daylight
- Moon 88% · 8:38 pm waning gibbous · rises at 8:38 pm
- High Wave Advisory (波浪注意報) · Ishigaki City: waves up to 9.8 ft, take care. Until further notice. Japan Meteorological Agency (JMA), issued Sun 25, 3:49 pm · Public Data License 1.0
Official text
Japanese
八重山地方波浪警報・注意報
八重山地方では、高波に注意してください。
石垣市：波浪注意報（うねり）（継続）
波高：３メートル出典：気象庁ホームページ (https://www.jma.go.jp/). TidePlanet has extracted this area’s warnings from the JMA’s, translated their names and converted their figures to the chosen units: this is not an official JMA publication.
Today in Ishigaki there are high tides at 9:27 am (4.9 ft) and 8:39 pm (5.9 ft) and low tides at 3:01 am and 2:49 pm. Tide coefficient 93. Right now the tide is rising toward the high tide at 9:27 am. The sun rises at 6:48 am and sets at 6:06 pm: 11 h 18 min of daylight. The moon is 88% illuminated (waning gibbous) and rises at 8:38 pm. Major solunar periods run from 1:46 am to 3:46 am and from 2:19 pm to 4:19 pm. The next spring tides arrive from October 27 to 29. The sea is slight, with 3.1 ft waves. There's a gentle breeze from the northeast (10 mph). Partly cloudy, 79 °F.
Fishing in Ishigaki today
Best time to fish
Solunar activity today: medium- Low tide at 2:49 pm
- Major period 2:19–4:19 pm
- Steady pressure (30.06 inHg), light offshore wind (6 mph) and some swell (2.7 ft waves) to stir the water
- Waning gibbous: a bit more activity than at the quarters
- Highest tide coefficient today: 93 (spring tides)
Your day at a glance
The best window, 2:20 pm to 3:50 pm, combines the 2:49 pm low tide, a major period and some swell. Also good from 9:30 am to 10:30 am, with the 9:27 am high tide, moonset and some swell. Also worth a try from 2:00 am to 3:50 am, with the 3:01 am low tide, a major period and some swell, though with moderate wind.
Species with the most records nearby: mangrove red snapper, striped mullet, great barracuda and giant trevally. What you can catch
Beach day in Ishigaki
Is it a beach day?
7 good hours- Sunny
- Feels like 83 °F: beach weather
- Offshore breeze (7 mph)
- Calm for swimming: 2.8 ft waves
- UV 7 (high): SPF 50 sunscreen
- Water at 81 °F (warm)
Today, hour by hour
- Swimming Calm · 2.8 ft
2.8 ft waves: calm for swimming. Low rip current risk. Always follow the lifeguard's flags.
- Water 81 °F
Warm: very pleasant.
- Sun & sunscreen UV 7 · SPF 50
Max UV 7 (high): SPF 50 sunscreen, reapplied every 2 hours.
- Wind 10 mph
Offshore breeze (10 mph). Watch floats and inflatables: offshore wind carries them out to sea.
- Tide & sand 2:49 pm
Low tide at 3:01 am and 2:49 pm: that's when there's the most sand. High tide at 9:27 am and 8:39 pm. Coefficient 93 (spring tides): little sand left at high tide.
The best window, 12:00 pm to 5:00 pm, brings sunshine, beach weather, little wind, a calm sea, water at 81 °F and low tide at 2:49 pm.
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 Ishigaki
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- 多田浜海岸 1.9 mi · SE
- 真栄里ビーチ 2.1 mi · E
- 大浜海岸 2.7 mi · E
- Parking
- Fusaki Beach 3.3 mi · NW
- Parking
- Nārasa Beach 3.8 mi · W
- Kitotchi Beach 3.9 mi · SW
- Aiyaru Beach 4.0 mi · SW
- Kondoi Beach 5.2 mi · W
- Restrooms
- Showers
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 Ishigaki
Webcams provided by windy.com — add a webcam
Tides in Ishigaki
Today's high and low tides
- ▼ Low tide 3:01 am -0.1 ft
- ▲ Next high tide 9:27 am 4.9 ft · coef. 93
- ▼ Low tide 2:49 pm 2.6 ft
- ▲ High tide 8:39 pm 5.9 ft · coef. 87
↑ Rising The tide is rising. 2 h 35 min to high tide at 9:27 am.
Tide coefficient 93 for the 9:27 am high tide and 87 for the 8:39 pm high tide. Spring tides. The water rises and falls 6.0 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 August 13 (6.8 ft) and the lowest, on December 25 (-1.0 ft).
Mixed: two high and two low tides a day, but of quite different heights.
Heights above NLLW. Astronomical prediction: wind and air pressure can raise or lower the water by a few inches, and more in a storm. Not for navigation. NLLW
Tide coefficient and range in October
The biggest tides of the month came from October 26 to 27 (coefficient 106, 5.9 ft range). The smallest, from October 18 to 19 (coefficient 22, 2.6 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 | 6:48 am · 6:06 pm | Low tide 3:01 am · -0.1 ft | High tide 9:27 am · 4.9 ft | Low tide 2:49 pm · 2.6 ft | High tide 8:39 pm · 5.9 ft | Coef. 93 | 88% | Major periods 1:46 am · 2:19 pm | Medium |
| Fri 30 | 6:49 am · 6:05 pm | Low tide 3:50 am · 0.1 ft | High tide 10:22 am · 4.5 ft | Low tide 3:29 pm · 2.9 ft | High tide 9:23 pm · 5.6 ft | Coef. 79 | 80% | Major periods 2:51 am · 3:23 pm | Medium |
| Sat 31 | 6:49 am · 6:05 pm | Low tide 4:46 am · 0.4 ft | High tide 11:29 am · 4.1 ft | Low tide 4:19 pm · 3.2 ft | High tide 10:16 pm · 5.2 ft | Coef. 62 | 69% | Major periods 3:55 am · 4:26 pm | Medium |
| Sun 1 | 6:50 am · 6:04 pm | Low tide 5:51 am · 0.9 ft | High tide 1:00 pm · 3.9 ft | Low tide 5:35 pm · 3.4 ft | High tide 11:30 pm · 4.7 ft | Coef. 48 | 58% | Major periods 4:55 am · 5:24 pm | Medium |
| Mon 2 | 6:50 am · 6:03 pm | Low tide 7:12 am · 1.2 ft | High tide 2:40 pm · 4.0 ft | Low tide 7:38 pm · 3.3 ft | — | Coef. 42 | Last quarter | Major periods 5:51 am · 6:17 pm | Medium |
| Tue 3 | 6:51 am · 6:03 pm | High tide 1:15 am · 4.4 ft | Low tide 8:36 am · 1.4 ft | High tide 3:37 pm · 4.3 ft | Low tide 9:22 pm · 2.8 ft | Coef. 47 | 36% | Major periods 6:42 am · 7:06 pm | Medium |
| Wed 4 | 6:52 am · 6:02 pm | High tide 2:59 am · 4.4 ft | Low tide 9:43 am · 1.6 ft | High tide 4:14 pm · 4.5 ft | Low tide 10:24 pm · 2.2 ft | Coef. 58 | 26% | Major periods 7:29 am · 7:52 pm | Low |
▲ high tide · ▼ low tide · heights above NLLW. Major periods: start time; they last 2 hours. Activity: based on the moon phase and the solunar periods.
Where this tide comes from
Tides from the Ishigaki station (UHSLC, TICON-4), 0.9 mi from Ishigaki. Times and heights are its predictions.
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 Ishigaki
Sea stateSea state: slight
The waves you may find
- Most commonMost common1.6 ft
- Significant3.1 ft
- Highest expectedHighest6.4 ft
One wave in seven is higher than the significant height, and about 3 times a day one reaches 6.4 ft. Before heading out, expect waves of up to 6.4 ft.
Wind on the coast and offshore
The model doesn't separate offshore wind here: it's the same as on the coast.
Cross-offshore wind. The coast faces south 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 build over the next few days. The biggest waves arrive on Tuesday 3: 5.8 ft with a period of 9 s, from the east-northeast (moderate).
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 about normal for late October.
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 6:52 am (local time).
Surf in Ishigaki today
Surf today
Poor- 1.3–2.0 ft surf at the shore, a fun size for most surfers
- 1.8 ft swell at 7 s from the east, short: weak, messy waves
- Light offshore wind (6 mph): it holds up and grooms the waves
- Rising tide (high tide at 8:39 pm)
- Light: First light 6:25 am · sunrise 6:48 am · sunset 6:06 pm · last light 6:29 pm
- Tide: low 3:01 am (-0.1 ft), high 9:27 am (4.9 ft), low 2:49 pm (2.6 ft) and high 8:39 pm (5.9 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 80.4 °F: boardshorts or a swimsuit and a rash guard.
- Energy: 28 kJ · Low power
Today’s surf at a glance
The best window, 2:00 pm to 6:00 pm, 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 Ishigaki today
Diving and snorkeling today
Likely visibility: fair- Slack water around high tide (9:27 am): little current from 9:00 am to 9:50 am
- 2.2 ft swell at 5 s from the east: some surge on the bottom
- Light offshore wind (9 mph)
- 0.5 mph current toward the north-northeast, weak (model)
- Sun high: more light underwater
- Slack water today: low tide 3:01 am (2:46–3:20 am), high tide 9:27 am (9:00–9:50 am), low tide 2:49 pm (2:20–3:20 pm) and high tide 8:39 pm (8:20–9:00 pm)
- Likely visibility: fair. Swell (up to 3.2 ft at 8 s) and wind over the last few days have stirred up the water. Based on the last 24 hours of data.
- Water at 80.4 °F: a shorty or a rash guard.
- Snorkeling: doable, with some waves or wind.
- Night dive: dark from 6:29 pm. Waning gibbous (88%), rising at 8:38 pm: a bright night.
Your diving day at a glance
The best window, 9:30 am to 10:40 am, combines slack water at high tide, light wind, weak current and the sun high.
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
- Middle Book 5.4 mi
- Ukon Denchi 6.8 mi
- Blue Space Ishigaki 0.2 mi
- Sunny Sunny 0.2 mi
- HangOut Divers 0.2 mi
- ryaaan 0.2 mi
- HanaTola 0.2 mi
- moss Divers 0.3 mi
- ビッグビーチ石垣島 0.3 mi
- アクアカラーズ 0.3 mi
- ココナッツ石垣島 0.3 mi
- ブルミンゴ 0.4 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
Sites: © OpenStreetMap contributors (ODbL).
Weather in Ishigaki
Now in Ishigaki
- Low / high
- 78 / 80 °F
- Rain
- 0.00 in · 8%
- Clouds
- 62%
- Humidity
- 58%
- Dew pointDew point
- 63 °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 (−0.00 inHg in 3 hours). It barely changes over the next 48 hours. 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 | Clear | Clear | Mainly clear | Partly cloudy | Clear sky | Clear sky | Mainly clear | Mainly clear |
| Temperature | 78° | 78° | 79° | 79° | 80° | 80° | 80° | 80° |
| Wind (mph) | 16 NE | 14 NE | 10 NE | 9 NE | 7 NE | 6 NE | 8 NNE | 7 N |
| Gusts | 22 | 19 | 16 | 15 | 12 | 11 | 11 | 12 |
| Waves | 3.9 ft | 3.6 ft | 3.2 ft | 3.0 ft | 2.8 ft | 2.7 ft | 2.6 ft | 2.4 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 |
- 6:00 am 79° 10 NE 3.2 ft
- 9:00 am 79° 9 NE 3.0 ft
- 12:00 pm 80° 7 NE 2.8 ft
- 3:00 pm 80° 6 NE 2.7 ft
- 6:00 pm 80° 8 NNE 2.6 ft
- 9:00 pm 80° 7 N 2.4 ft
- 12:00 am 79° 10 N 2.4 ft
- 3:00 am 78° 13 N 2.4 ft
Next 14 daysComing days
| Day | Sky | Low / high | Max wind | Max wave | High tides |
|---|---|---|---|---|---|
| Today · 29 | 78 / 80 °F | 16 mph NE | 3.9 ft | 9:27 am · 8:39 pm | |
| Fri 30 | 77 / 79 °F | 22 mph NNE | 3.8 ft | 10:22 am · 9:23 pm | |
| Sat 31 | 78 / 80 °F | 21 mph NE | 3.7 ft | 11:29 am · 10:16 pm | |
| Sun 1 | 78 / 81 °F | 17 mph ESE | 3.7 ft | 1:00 pm · 11:30 pm | |
| Mon 2 | 79 / 81 °F | 15 mph NE | 4.4 ft | 2:40 pm | |
| Tue 3 | 78 / 79 °F | 21 mph NE | 5.8 ft | 1:15 am · 3:37 pm | |
| Wed 4 | 78 / 80 °F | 17 mph NE | 5.6 ft | 2:59 am · 4:14 pm | |
| Thu 5 | 78 / 79 °F | 16 mph NNE | 5.9 ft | 4:15 am · 4:45 pm | |
| Fri 6 | 78 / 80 °F | 18 mph NE | 4.4 ft | 5:13 am · 5:14 pm | |
| Sat 7 | 79 / 81 °F | 17 mph ESE | 6.6 ft | 6:02 am · 5:42 pm | |
| Sun 8 | 79 / 80 °F | 12 mph E | 6.0 ft | 6:44 am · 6:10 pm | |
| Mon 9 | 75 / 79 °F | 32 mph NE | 10 ft | 7:24 am · 6:38 pm | |
| Tue 10 | 75 / 76 °F | 30 mph NE | 10 ft | 8:01 am · 7:06 pm | |
| Wed 11 | 75 / 78 °F | 21 mph ENE | 7.3 ft | 8:38 am · 7:34 pm |
- Fri 30 Light drizzle 77° / 79° 3.8 ft
- Sat 31 Light drizzle 78° / 80° 3.7 ft
- Sun 1 Overcast 78° / 81° 3.7 ft
- Mon 2 Light drizzle 79° / 81° 4.4 ft
- Tue 3 Light drizzle 78° / 79° 5.8 ft
- Wed 4 Overcast 78° / 80° 5.6 ft
- Thu 5 Partly cloudy 78° / 79° 5.9 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, normal highs for late October (80 °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 6:52 am (local time).
The sun in Ishigaki
Sunrise and sunset
- First light 5:58 am
- Full dark 6:56 pm
- Civil dawn 6:25 am
- Civil dusk 6:29 pm
- Solar noon 12:27 pm (52° high)
- Daylight 11 h 18 min (−1 min)
- Evening golden hour 5:35 pm
- Full dark 6:56 pm
Golden hour and the day-night map
Today the sun is 92,343,902 mi away and looks 32′ 11″ across.
The moon in Ishigaki
Moon phase and position
Today the moon is 226,480 mi away and looks 32′ 46″ across.
Solunar periods
Today's activity: medium- 1:46–3:46 am Major · the moon passes overhead · high activity
- 2:19–4:19 pm Major · the moon passes underfoot · high activity
- 9:28–10:28 am Minor · moonset · medium activity
- 8:08–9:08 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 · 5:29 amNov 2 in 4 days
- New moon Mon, Nov 9 · 4:03 pmNov 9 in 11 days
- First quarter Tue, Nov 17 · 8:48 pmNov 17 in 19 days
- Full moon Tue, Nov 24 · 11:54 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 Ishigaki
Piers, ramps and tackle shops nearby
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- Jetty 0.9 mi
- Jetty 0.9 mi
- Jetty 1.1 mi
- Jetty 1.1 mi
- Jetty 1.1 mi
- Jetty 1.2 mi
- Jetty 1.3 mi
- Jetty 1.4 mi
- Jetty 1.7 mi
- Jetty 1.8 mi
- Ishigaki new port Cruise ship Terminal 1.6 mi
- 竹富東港 3.7 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
Shallow, gradualShallow, gradual bottom: you need to go 0.95 mi out for 33 ft of water. It reaches 164 ft at 2.3 mi.
From the shoreline (0.8 mi from Ishigaki) out to sea, heading south.
How far from shore
- 16 ft deep0.9 mi
- 33 ft deep0.95 mi
- 66 ft deep1.1 mi
- 164 ft deep2.3 mi
For fishing, swimming and diving
- Shore fishing. Shallow, gradual bottom (16 ft at 0.9 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. Shallow near shore: you only reach 33 ft at 0.95 mi. For dives deeper than 33 ft, 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: 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
Kannonzaki Lighthouse (Ishigaki) 3.2 mi northwest
Data from Wikidata. For reference only: not for navigation. Wikidata · Sources and licenses
Tides near IshigakiTides nearby
- Ishigaki Gyokō0.8 mi
- Ishigaki Kō1.5 mi
- Ōhama2.5 mi
- Nagura3.6 mi
- Miyara4.2 mi
- Taketomi4.6 mi
- Shiraho5.3 mi
- Fukai7.8 mi
- Kabira8.1 mi
- Shirahama26 mi
Ishigaki at a glance
- Town or city of about 47,637 people. Coordinates: 24.345° N, 124.157° E.
- It is 255 mi southwest of Naha, the main place in Okinawa. The sun rises 12 min later and sets 16 min later than in Naha.
- The nearest tide station, Ishigaki, is 0.9 mi to the southwest.
- Its coast faces south.
- Beaches and harbors nearby: Ishigaki Gyokō (0.8 mi), Ishigaki Kō (1.5 mi), Taketomi-higashi Kō (3.9 mi).
Questions about IshigakiQuestions
What time is high tide today in Ishigaki?
Today in Ishigaki there are high tides at 9:27 am (4.9 ft) and 8:39 pm (5.9 ft) and low tides at 3:01 am and 2:49 pm. Tide coefficient 93.
What time is sunset today in Ishigaki?
At 6:06 pm. There is light until the end of civil twilight, at 6:29 pm.
What time is sunrise tomorrow in Ishigaki?
At 6:49 am. First light comes at 5:58 am.
What phase is the moon today?
Waning gibbous, 88% illuminated. New moon on Mon, Nov 9 · 4:03 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 1:46–3:46 am, Minor 9:28–10:28 am, Major 2:19–4:19 pm, Minor 8:08–9:08 pm. Today's activity is medium.
What's the weather like today in Ishigaki?
Overcast, from 78 °F to 80 °F, with a gentle breeze from the northeast (10 mph) and a 8% chance of rain.
How is the sea today in Ishigaki?
Slight (Douglas 3): 3.1 ft waves with a period of 6.8 s from the east-northeast. The water is 80.4 °F.
When is the best time to visit Ishigaki?
The best time to visit Ishigaki is from September to December and from February to May: highs of 70 °F to 86 °F, about 13 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: Ishigaki (UHSLC) 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).