Why are the start dates for enhanced predictions limited to + 50 years from the current date?
The harmonic values that comprise the tidal curve used to perform the predictions are constantly being updated. This is so the most accurate predictions can be generated, especially for the near future. The + 50 year boundary on predictions helps ensure that the predictions obtained from EasyTide maintain this high level of accuracy. I see that predictions can be obtained for years as far back as 100AD. Does EasyTide automatically make the necessary adjustment in days to take account of the differences between the Julian and Gregorian Calendars? No. The earliest year in the Gregorian calendar is 1752. You can choose to enter dates earlier than this but EasyTide will not correct for such dates for the difference between the Julian and Gregorian calendars. It is up to the user to make the necessary adjustment ensuring that the date you choose is the equivalent date in the Julian calendar. There is actually a sliding scale of days to be applied depending on the year you require. There are
The harmonic values that comprise the tidal curve used to perform the predictions are constantly being updated. This is so the most accurate predictions can be generated, especially for the near future. The + 50 year boundary on predictions helps ensure that the predictions obtained from EasyTide maintain this high level of accuracy. I see that predictions can be obtained for years as far back as 100AD. Does EasyTide automatically make the necessary adjustment in days to take account of the differences between the Julian and Gregorian Calendars? No. The earliest year in the Gregorian calendar is 1752. You can choose to enter dates earlier than this but EasyTide will not correct for such dates for the difference between the Julian and Gregorian calendars. It is up to the user to make the necessary adjustment ensuring that the date you choose is the equivalent date in the Julian calendar. There is actually a ‘sliding scale’ of days to be applied depending on the year you require.
