这个月的一页大日历：今天被圈了出来，点任意一天看它的读法；旁边的小地球沿着绕太阳的轨道滑到那一天——看看春夏秋冬，就明白了一年和日期的关系。
A big page of this month, with today circled. Tap any day to see its Chinese reading, and a little Earth slides along its orbit around the Sun to that date — watch spring, summer, autumn and winter go by, and a year starts to make sense.