Tides app concept - calendar view

Calendar view of my Tides UI concept. Taking usability and accessibility into account I placed all interactive elements at the bottom part of the screen (within the reach of a thumb of a hand holding an iPhone). Whenever user selects the date, tides forecast for that day is shown in the upper part of the screen.
Date may be selected manually or via the "go to" menu item.
As always, all critique, likes and comments are welcome!