I created a simple spreadsheet to calculate the Gloranthan tides that allows estimates of Gloranthan tides depending on the weekday of the Blue Streak added to the influence of the weekly tide that is reflected in the phase of the Red Moon (as visible from Magasta's Pool/Dragon Pass). There are two parameters that can be played with for different models that you can play with. The first is the maximum amplitude for the weekly tidal cycle. This value gets multiplied with my estimates of