The tide calendars are based on David Flater's
Xtide program. Tide predictions are provided
without warranty.
Xtide needs so called "harmonics constants" for a location in order to calculate tide calendars. If you would like us to add tide calendars for your country you may contact the national hydrographic institute and ask them to provide the harmonic constants for their national tide spots.
= flooding
= ebbing
= full tide circle
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