【實用工具app】Day hour|最夯免費app-綠色工廠好玩App

Simple program calculates time of sunrise, sunset, daylight length and current daylight hour by given coordinates (remembers last input coordinates for convenience). Also gives calculated lunar day (integer) on chosen date (formula Harvey, precision +-1day, Say, it'll show day 25 when it's actually 25.4- meaning day 26-th).