"Orthodox calendar" is a free application that includes a complete calendar of holidays and saints of the Orthodox Church for the period from 2020 to 2023. inclusive.

The application does not require an internet connection.

List of main functions:
- Calendar of Orthodox holidays, switching the mode "Day" or "Month";
- Prayer book;
- Bible. Synodal translation;
- Lives of saints and description of holidays;
- Evangelical and Apostolic readings;
- Thoughts of Theophan the Recluse;
- Sayings of the Optina elders;
- Troparia and kontakia of the day;
- View the date of Easter;
- View twelfth and great holidays;
- View days of special commemoration of the departed;
- View posts and weeks;
- Widgets (the application must be in the smartphone's memory, this is an Android limitation).

You can view and download the application source code at https://github.com/AlexandrKozlovskiy/OrthodoxCalendar