In Venice people always keep one eye towards the tide. The [i][url=http://www.comune.venezia.it/archivio/1748]Centro Previsioni e Segnalazioni Maree[/url][/i] monitors accurately the forecasts and warns when extremely high tides are expected. Op its website you can watch the dayly forecasts.[br]Next picture shows the tides of the first three days of february 2017. You can clearly see the two unequal dayly high tides.

Caused by earth's rotation the gravitational system is constantly changing. In the overview of february you can see that the hour of the high tides shift in the day. The moon fases are shown to.