The Gregorian calendar, KBS 128, is considered one of the most accurate Gregorian calendars, with an accuracy of thousands of years, unlike the Julian calendar and the Gregorian calendar. The years are compressed every 4 years, except for the years that are divisible by 128, taking into account the beginning of the cycle from the beginning of the Gregorian calendar in the year 1582.

This application contains Gregorian calendars, where you can convert between them, study them, and view tables, including:
The Gregorian calendar used today
Julian calendar or Eastern church calendar.
Documentary general Gregorian calendar
Gregorian calendar cycle 128.

Services include:
-Display today's date in several calendars
-Display the monthly comparative calendar between several calendars
-Display the solar cycle on the equinox of the selected city.
-Display explanations about calendars
-Convert between any calendar and another.

This application is linked directly to the "Calendar" library, which links dozens of calendars together. For any questions, do not hesitate and you can browse other applications on the developer page.