Harkers Island tides today
- Tide now 0.1 ft ↓ falling · low 6:26 pm (0.1 ft)
- Best time to fish 5:40–6:40 pm good day · 7/10
- Beach tomorrow 8:00–10:00 am Fair beach day · 5/10
- Waves · water 3.6 ft · 65 °F slight · 6.0 s from the east
- Wind · air 11 mph · 66 °F from the NE, gusts 25 · overcast
- Surf today 1.5–2.4 ft Poor day · 3/10 · 3:00–6:42 pm
- Sun 7:23 am–6:16 pm 10 h 53 min of daylight
- Moon 91% · 8:03 pm waning gibbous · rises at 8:03 pm
- Beach Hazards Statement: rip currents, waves or other hazards at the beaches. Until 8:00 pm today. NWS Newport/Morehead City NC
- Small Craft Advisory: winds or seas hazardous to small boats. Until Fri 30, 12:00 am. NWS Newport/Morehead City NC
- Coastal Flood Advisory: minor flooding along the shore at high tide. Until 2:00 pm tomorrow. NWS Newport/Morehead City NC
Today in Harkers Island there are high tides at 11:13 am (2.4 ft) and 11:31 pm (1.7 ft) and low tides at 5:20 am and 6:26 pm. Tide coefficient 88. Right now the tide is falling toward the low tide at 6:26 pm. The sun rises at 7:23 am and sets at 6:16 pm: 10 h 53 min of daylight. The moon is 91% illuminated (waning gibbous) and rises at 8:03 pm. Major solunar periods run from 1:41 am to 3:41 am and from 2:13 pm to 4:13 pm. The next spring tides arrive from October 26 to 28. The sea is slight, with 3.6 ft waves. There's a gentle breeze from the northeast (11 mph). Overcast, 66 °F.
Fishing in Harkers Island today
Best time to fish
Solunar activity today: medium- Low tide at 6:26 pm
- Sunset at 6:16 pm, golden hour from 5:41 pm
- Steady pressure (30.27 inHg), light offshore wind (11 mph) and some swell (3.6 ft waves) to stir the water
- Waning gibbous: a bit more activity than at the quarters
- Highest tide coefficient today: 88 (average tides)
Your day at a glance
The best window, 5:40 pm to 6:40 pm, combines the 6:26 pm low tide, sunset and some swell. Also good from 10:10 am to 10:50 am, with the 11:13 am high tide, moonset and some swell.
Species with the most records nearby: spot, Atlantic croaker, summer flounder and weakfish. October is one of the months when these are seen most: spot and Atlantic croaker. What you can catch
Beach day in Harkers Island
Is it a beach day?
1 good hour- Official statement: Beach Hazards Statement (NWS Newport/Morehead City NC)
Rip current risk today: low · tomorrow: low (NWS)
Rip currents can still form near jetties, piers and reefs: swim near a lifeguard.
- Sun and clouds
- Feels like 74 °F: mild
- Calm for swimming: 3.6 ft waves
- UV 4 (moderate): SPF 30 sunscreen
- Water at 65 °F (cool)
- Light offshore wind (12 mph): it blows floats and inflatables out to sea
Today, hour by hour
- Swimming Calm · 3.6 ft
3.6 ft waves: calm for swimming. Always follow the lifeguard's flags.
- Water 65 °F
Cool: refreshing on a hot day.
- Sun & sunscreen UV 4 · SPF 30
Max UV 4 (moderate): SPF 30 sunscreen, reapplied every 2 hours.
- Wind 13 mph
Moderate offshore wind (13 mph). Skip the inflatables: offshore wind carries them out to sea.
- Tide & sand 6:26 pm
Low tide at 5:20 am and 6:26 pm: that's when there's the most sand. High tide at 11:13 am and 11:31 pm.
The best window, 1:00 pm to 5:00 pm, brings a calm sea, though with light offshore wind.
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 Harkers Island
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- Bare Sand Beach 4.5 mi · E
Water quality: check the official beach advisories for North Carolina (N.C. Recreational Water Quality Program).
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 Harkers Island
Webcams provided by windy.com — add a webcam
Tides in Harkers Island
Today's high and low tides
- ▼ Low tide 5:20 am -0.1 ft
- ▲ High tide 11:13 am 2.4 ft · coef. 88
- ▼ Next low tide 6:26 pm 0.1 ft
- ▲ High tide 11:31 pm 1.7 ft · coef. 86
↓ Falling The tide is falling. 27 min to low tide at 6:26 pm.
Tide coefficient 88 for the 11:13 am high tide and 86 for the 11:31 pm high tide. Average coefficient. The water rises and falls 2.5 ft between the highest high and the lowest low: an average 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 November 25 (2.4 ft) and the lowest, on December 25 (-0.6 ft).
Mixed: two high and two low tides a day, but of quite different heights.
Heights above mean lower low water (MLLW), the zero of US nautical charts. Astronomical prediction: wind and air pressure can raise or lower the water by a few inches, and more in a storm. Not for navigation. MLLW
Tide coefficient and range in October
The biggest tides of the month came from October 26 to 28 (coefficient 90, 2.5 ft range). The smallest, from October 18 to 19 (coefficient 40, 0.9 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 | 7:23 am · 6:16 pm | Low tide 5:20 am · -0.1 ft | High tide 11:13 am · 2.4 ft | Low tide 6:26 pm · 0.1 ft | High tide 11:31 pm · 1.7 ft | Coef. 88 | 91% | Major periods 1:41 am · 2:13 pm | Medium |
| Thu 29 | 7:24 am · 6:15 pm | Low tide 6:09 am · -0.1 ft | High tide 12:05 pm · 2.3 ft | Low tide 7:20 pm · 0.2 ft | — | Coef. 83 | 84% | Major periods 2:45 am · 3:18 pm | Medium |
| Fri 30 | 7:25 am · 6:14 pm | High tide 12:24 am · 1.6 ft | Low tide 7:03 am · 0.0 ft | High tide 1:02 pm · 2.2 ft | Low tide 8:19 pm · 0.3 ft | Coef. 80 | 74% | Major periods 3:50 am · 4:21 pm | Medium |
| Sat 31 | 7:26 am · 6:13 pm | High tide 1:23 am · 1.6 ft | Low tide 8:03 am · 0.1 ft | High tide 2:03 pm · 2.1 ft | Low tide 9:22 pm · 0.4 ft | Coef. 74 | 63% | Major periods 4:52 am · 5:22 pm | Medium |
| Sun 1 | 6:27 am · 5:12 pm | High tide 1:30 am · 1.5 ft | Low tide 8:11 am · 0.3 ft | High tide 2:09 pm · 2.0 ft | Low tide 9:26 pm · 0.4 ft | Coef. 68 | Last quarter | Major periods 4:50 am · 5:17 pm | Medium |
| Mon 2 | 6:28 am · 5:11 pm | High tide 2:43 am · 1.6 ft | Low tide 9:26 am · 0.4 ft | High tide 3:17 pm · 1.9 ft | Low tide 10:29 pm · 0.4 ft | Coef. 65 | 41% | Major periods 5:43 am · 6:08 pm | Medium |
| Tue 3 | 6:29 am · 5:10 pm | High tide 3:54 am · 1.6 ft | Low tide 10:42 am · 0.4 ft | High tide 4:21 pm · 1.8 ft | Low tide 11:26 pm · 0.3 ft | Coef. 67 | 30% | Major periods 6:31 am · 6:55 pm | Medium |
▲ high tide · ▼ low tide · heights above MLLW. 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 Shell Point station (NOAA), 1.7 mi from Harkers Island. Times and heights are its predictions. It is a NOAA subordinate station: its times and heights come from the Cape Hatteras Fishing Pier reference station with the official corrections.
Station data attribution: Slackwater database (https://github.com/openwatersio/slackwater-database)
The sea at Harkers Island
Sea stateSea state: slight
The waves you may find
- Most commonMost common1.8 ft
- Significant3.6 ft
- Highest expectedHighest7.4 ft
One wave in seven is higher than the significant height, and about 3 times a day one reaches 7.4 ft. Before heading out, expect waves of up to 7.4 ft.
Wind on the coast and offshore
Offshore wind. The coast faces south and the wind blows from land out to sea: calm shore and clean waves, but watch the drift out to sea.
Wave height, next 7 daysWaves, next 7 days
Waves stay much the same all week. The biggest waves arrive on Wednesday 28: 3.7 ft with a period of 6 s, from the east (slight).
Water temperature
Water temperature →Water temperature changes how fish behave: in very cold or very warm water they feed less. The water warms over the next few days: about 66.7 °F by Tuesday 3.
Water colder than normal for late October (−6.8 °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 5:59 pm (local time).
Nearest marine station
This is a real measurement of the sea, not a forecast. Data from station CLKN7, NOAA National Data Buoy Center (public domain).
Surf in Harkers Island today
Surf today
Poor- 1.5–2.4 ft surf at the shore, a fun size for most surfers
- 2.8 ft swell at 6 s from the east-southeast, short: weak, messy waves; it hits this coast at an angle
- Light offshore wind (12 mph): it holds up and grooms the waves
- Falling tide (low tide at 6:26 pm)
Rip current risk today: low · tomorrow: low (NWS)
Rip currents can still form near jetties, piers and reefs: swim near a lifeguard.
Surf height from the NWS, today: 1.0–2.0 ft
- Light: First light 6:57 am · sunrise 7:23 am · sunset 6:16 pm · last light 6:42 pm
- Tide: low 5:20 am (-0.1 ft), high 11:13 am (2.4 ft), low 6:26 pm (0.1 ft) and high 11:31 pm (1.7 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 64.6 °F: a 3/2 fullsuit.
- Energy: 57 kJ · Low power
Today’s surf at a glance
The best window, 3:00 pm to 6:42 pm, has light offshore wind, though with a short-period swell. 10:00 am to 2:00 pm can also work, with 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.
Diving in Harkers Island today
Diving and snorkeling today
Likely visibility: good- Slack water around high tide (11:13 am): little current from 10:40 am to 12:10 pm
- 2.5 ft swell at 5 s from the east-southeast: some surge on the bottom
- Light offshore wind (11 mph)
- 0.3 mph current toward the south, weak (model)
- Sun high: more light underwater
- Slack water today: low tide 5:20 am (4:20–6:00 am), high tide 11:13 am (10:40 am–12:10 pm), low tide 6:26 pm (5:20–7:10 pm) and high tide 11:31 pm (10:50 pm–12:50 am)
- Likely visibility: good. Swell (up to 2.9 ft at 7 s) over the last few days has stirred up the water. Based on the last 24 hours of data.
- Water at 64.6 °F: a 5 mm wetsuit.
- Snorkeling: better not, with these waves, wind or current.
- Night dive: dark from 6:42 pm. Waning gibbous (91%), rising at 8:03 pm: a bright night.
Your diving day at a glance
The best window, 10:10 am to 1:10 pm, 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
- USS Pilgrim (SP-1204) 2.0 mi
- Queen Anne's Revenge Shipwreck 6.3 mi
- Wreck 9.2 mi
- Wreck 10.0 mi
- Wreck 10 mi
- Wreck 10 mi
- Wreck 11 mi
- AR-315 11 mi
- AR-285 12 mi
- Rachel Carson Estuarine Sanctuary 4.4 mi
- Discovery Diving 6.2 mi
- Olympus Dive Center 8.9 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). US wrecks: NOAA electronic navigational charts (ENC), a U.S. Government work; not for navigation. Artificial reefs: NOAA and BOEM (MarineCadastre.gov), a U.S. Government work.
Weather in Harkers Island
Now in Harkers Island
- Low / high
- 60 / 73 °F
- Rain
- 0.00 in · 9%
- Clouds
- 97%
- Humidity
- 86%
- Dew pointDew point
- 62 °F
- Visibility
- 9.7 mi
- UV indexUV
- 0 · low
- Air qualityAir
- Good · 46
- 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 (+0.01 inHg in 3 hours). Over the next 48 hours: −0.11 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 | Clear | Clear | Clear | Mainly clear | Light drizzle | Light drizzle | Overcast | Overcast |
| Temperature | 60° | 62° | 63° | 65° | 69° | 73° | 66° | 64° |
| Wind (mph) | 7 NNE | 9 NNE | 7 NNE | 9 NNE | 11 NE | 12 NE | 11 NE | 9 NE |
| Gusts | 18 | 21 | 21 | 20 | 23 | 22 | 25 | 19 |
| Waves | 2.7 ft | 2.8 ft | 3.1 ft | 3.3 ft | 3.4 ft | 3.6 ft | 3.6 ft | 3.7 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 pm 66° 11 NE 3.6 ft
- 9:00 pm 64° 9 NE 3.7 ft
- 12:00 am 64° 9 NE 3.6 ft
- 3:00 am 65° 10 NE 3.5 ft
- 6:00 am 65° 9 NE 3.5 ft
- 9:00 am 68° 10 ENE 3.4 ft
- 12:00 pm 70° 15 NE 3.4 ft
- 3:00 pm 70° 15 NE 3.4 ft
Next 14 daysComing days
| Day | Sky | Low / high | Max wind | Max wave | High tides |
|---|---|---|---|---|---|
| Today · 28 | 60 / 73 °F | 13 mph NNE | 3.7 ft | 11:13 am · 11:31 pm | |
| Thu 29 | 64 / 71 °F | 15 mph NE | 3.6 ft | 12:05 pm | |
| Fri 30 | 61 / 71 °F | 9 mph NNE | 3.3 ft | 12:24 am · 1:02 pm | |
| Sat 31 | 60 / 66 °F | 19 mph NE | 3.0 ft | 1:23 am · 2:03 pm | |
| Sun 1 | 61 / 69 °F | 16 mph NE | 2.8 ft | 1:30 am · 2:09 pm | |
| Mon 2 | 64 / 70 °F | 17 mph ENE | 2.6 ft | 2:43 am · 3:17 pm | |
| Tue 3 | 64 / 71 °F | 18 mph ENE | 3.1 ft | 3:54 am · 4:21 pm | |
| Wed 4 | 65 / 72 °F | 15 mph NE | 3.1 ft | 4:58 am · 5:20 pm | |
| Thu 5 | 64 / 71 °F | 14 mph ESE | 5.1 ft | 5:53 am · 6:13 pm | |
| Fri 6 | 62 / 69 °F | 11 mph W | 6.4 ft | 6:42 am · 7:01 pm | |
| Sat 7 | 57 / 66 °F | 11 mph NNW | — | 7:27 am · 7:45 pm | |
| Sun 8 | 55 / 65 °F | 17 mph N | — | 8:08 am · 8:26 pm | |
| Mon 9 | 53 / 67 °F | 15 mph N | — | 8:47 am · 9:05 pm | |
| Tue 10 | 53 / 70 °F | 11 mph NNE | — | 9:25 am · 9:43 pm |
- Thu 29 Overcast 64° / 71° 3.6 ft
- Fri 30 Overcast 61° / 71° 3.3 ft
- Sat 31 Overcast 60° / 66° 3.0 ft
- Sun 1 Overcast 61° / 69° 2.8 ft
- Mon 2 Overcast 64° / 70° 2.6 ft
- Tue 3 Mainly clear 64° / 71° 3.1 ft
- Wed 4 Mainly clear 65° / 72° 3.1 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, a bit wetter and a slightly cooler sea. See the outlook →
- Normal Today, normal highs for late October (72 °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 5:59 pm (local time).
The sun in Harkers Island
Sunrise and sunset
- First light 6:28 am
- Full dark 7:12 pm
- Civil dawn 6:57 am
- Civil dusk 6:42 pm
- Solar noon 12:50 pm (42° high)
- Daylight 10 h 53 min (−2 min)
- Evening golden hour 5:41 pm
- Full dark 7:12 pm
Golden hour and the day-night map
Today the sun is 92,354,667 mi away and looks 32′ 11″ across.
The moon in Harkers Island
Moon phase and position
Today the moon is 226,429 mi away and looks 32′ 47″ across.
Solunar periods
Today's activity: medium- 1:41–3:41 am Major · the moon passes overhead · high activity
- 2:13–4:13 pm Major · the moon passes underfoot · high activity
- 9:51–10:51 am Minor · moonset · medium activity
- 7:33–8:33 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 · 3:29 pmNov 1 in 4 days
- New moon Mon, Nov 9 · 2:03 amNov 9 in 12 days
- First quarter Tue, Nov 17 · 6:48 amNov 17 in 20 days
- Full moon Tue, Nov 24 · 9:54 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 Harkers Island
Piers, ramps and tackle shops nearby
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- Washed Out Pier 5.0 mi
- Jetty 2.0 mi
- Jetty 2.0 mi
- Rock Jetty 5.5 mi
- Boat ramp 0.1 mi
- Boat ramp 1.0 mi
- Boat ramp 1.6 mi
- Marina 0.1 mi
- Marina 0.3 mi
- Marina 0.5 mi
- Marina 1.0 mi
- Parts and Tackle 0.2 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
Very shallowVery shallow and flat: even 2.2 mi from shore the water is less than 16 ft deep.
From the shoreline (650 ft from Harkers Island) out to sea, heading south.
How far from shore
- 16 ft deepnot within 2.2 mi
- 33 ft deepnot within 2.2 mi
- 66 ft deepnot within 2.2 mi
- 164 ft deepnot within 2.2 mi
For fishing, swimming and diving
- Shore fishing. Very shallow: the water doesn't reach 16 ft within 2.2 mi. Cast far from the beach, ideally around high tide.
- 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: the water doesn't reach 33 ft within 2.2 mi. For deeper dives, take a boat farther out.
There is land ahead (an island, a headland or the far shore) 2.2 mi out. Where the bottom comes up to the surface there are shoals, rocks or an islet next to the profile.
Source: NOAA U.S. Coastal Relief Model (public domain), cells of about 300 ft; depth below mean sea level. For reference only: not for navigation or anchoring.
Nearest lighthouse
Cape Lookout Lighthouse 5.4 mi south
- Light
- A white flash every 15 s · Fl W 15s
- Range
- 25 nautical miles (29 mi)
- Light height
- 171 ft above sea level
- Tower height
- 161 ft
- Built
- 1859
Data from Wikidata. For reference only: not for navigation. Wikipedia · Wikidata · Sources and licenses
Tides near Harkers IslandTides nearby
- Gloucester2.4 mi
- Marshallberg3.4 mi
- Barden Inlet4.6 mi
- Beaufort6.0 mi
- Davis9.0 mi
- Morehead City9.7 mi
- Atlantic Beach10 mi
- Pine Knoll Shores14 mi
- Atlantic18 mi
- Indian Beach19 mi
Harkers Island at a glance
- Town or city of about 1,207 people. Coordinates: 34.695° N, 76.559° W.
- It is 50 mi east of Jacksonville, the main place in North Carolina. The sun rises 4 min earlier and sets 3 min earlier than in Jacksonville.
- The nearest tide station, Shell Point, is 1.7 mi to the southeast.
- Its coast faces south.
- Beaches and harbors nearby: L R Rose Marina and Boatworks (0.5 mi), Bare Sand Beach (4.5 mi).
Questions about Harkers IslandQuestions
What time is high tide today in Harkers Island?
Today in Harkers Island there are high tides at 11:13 am (2.4 ft) and 11:31 pm (1.7 ft) and low tides at 5:20 am and 6:26 pm. Tide coefficient 88.
What time is sunset today in Harkers Island?
At 6:16 pm. There is light until the end of civil twilight, at 6:42 pm.
What time is sunrise tomorrow in Harkers Island?
At 7:24 am. First light comes at 6:28 am.
What phase is the moon today?
Waning gibbous, 91% illuminated. New moon on Mon, Nov 9 · 2:03 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 1:41–3:41 am, Minor 9:51–10:51 am, Major 2:13–4:13 pm, Minor 7:33–8:33 pm. Today's activity is medium.
What's the weather like today in Harkers Island?
Light drizzle, from 60 °F to 73 °F, with a gentle breeze from the northeast (11 mph) and a 9% chance of rain.
How is the sea today in Harkers Island?
Slight (Douglas 3): 3.6 ft waves with a period of 6.0 s from the east. The water is 65.1 °F.
When is the best time to visit Harkers Island?
The best time to visit Harkers Island is from April to May and in October: highs of 72 °F to 78 °F, about 9 rainy days a month and 7 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: NOAA station Shell Point (public domain), via Slackwater database. Sun and moon: our own calculation with astronomy-engine. Places: GeoNames (CC BY 4.0). Coastline: © OpenStreetMap contributors (ODbL).