旧暦月齢カレンダー is a calendar app that allows users to easily check lunar and moon phase information up until the yearWith this app, you can quickly see the dates for full moon, new moon, first quarter moon, and last quarter moon, as they are displayed with icons on the monthly calendar view.

In addition, the daily calendar view provides information on the lunar phase, the zodiac sign of the day, the nine stars, the twenty-four solar terms, and miscellaneous seasonal events. This comprehensive information allows users to stay connected with the lunar calendar and plan their activities accordingly.

The app is available for Android devices and is developed by SmarTrend. It is free to download and use, making it accessible to a wide range of users. With its user-friendly interface and accurate lunar and moon phase data, 旧暦月齢カレンダー is a valuable tool for those interested in following the lunar calendar.