United States
Select a coastal district to view marine ports, beaches, and tide calculation data.
Alabama
Collaborate
Alaska
1 ports
California
6 ports
Florida
1 ports
Georgia
1 ports
Hawaii
1 ports
Louisiana
Collaborate
Maine
1 ports
Maryland
Collaborate
Massachusetts
1 ports
New Jersey
2 ports
New York
2 ports
North Carolina
2 ports
Oregon
1 ports
Pennsylvania
Collaborate
Rhode Island
1 ports
South Carolina
1 ports
Texas
Collaborate
Virginia
1 ports
Washington
1 ports
Calculate Lunitidal Interval in United States
Can't find your port or want to calibrate your watch with today's tide? Enter coordinates below.
1
Geolocation
2
Moon Transit
3
Next High Tide
Step 1
Geolocation
Enter the exact coordinates of your beach, port, or surf spot.
Are you physically at this beach or port right now?
Only use automatic detection on-site. If calculating from home, enter coordinates manually above.
Step 2
Moon Transit
Calculated astronomical syzygy transit for these coordinates.
Location:
Resolving...
Coordinates:
--
Timezone:
--
Alignment Date:
--
Lunar Phase:
--
Lunar Transit:
--:--
Step 3
Next High Tide
Consult a local tide table for your spot and select the high tide time following the transit.
Search the high tide following 00:00 on date --/--/----: