const double kCalendarStartHour = 7.5;
const double kCalendarEndHour = 17.25;
const Duration kCalendarTimeInterval = Duration(minutes: 30);
const double kCalendarViewHeaderHeight = 60;

/// Minimum pixels per hour. Below this, the grid scrolls vertically rather
/// than compressing further.
const double kCalendarMinPxPerHour = 56;