How it works. The tide is calculated in your browser from six harmonic constituents (M2, S2, N2, K1, O1, M4), with astronomical arguments and nodal corrections. The constants were fitted to the Canadian Hydrographic Service's official predictions for Halifax (station 00490). It lands within about 5 minutes and 2 cm of this week's official highs and lows, and within about 13 minutes of the official 2021 tables, which shows it still holds years away from the data it was fitted to. Sun and moon positions use standard low-precision astronomical formulas. Weather is the latest Environment and Climate Change Canada observation for Halifax (Stanfield International Airport), refreshed every 10 minutes. When you move ahead in time, the scene switches to their hourly forecast. The model leaves out storm surge and wind setup.
Not for navigation. Use the official tables at
tides.gc.ca.
Weather data:
Environment and Climate Change Canada.