Learn about the Gregorian calendar and its history, such as who invented the Gregorian calendar. Explore the major properties of Julian vs. Gregorian calendars.

Find out who invented the calendar. Analyze the key differences between the Julian vs Gregorian Calendar systems and how these calendars influence modern calendars.

Explore the Julian and Gregorian Calendar systems in our short video lesson. Study their history and key differences, then reinforce your learning with a quiz.

Pope Gregory XIII is most known for the adoption of the Gregorian Calendar. The Gregorian Calendar is the mostly widely used calendar and is the calendar most people still use today.

The Hebrew Calendar: An Overview Many people are familiar with the secular Gregorian calendar, but many other cultures have different ways of tracking the days, months, and years.

Find out who invented the calendar. Analyze the key differences between the Julian vs Gregorian Calendar systems and how these calendars influence modern calendars.

The Julian and Gregorian Calendars: The Julian calendar and the Gregorian calendar are both solar calendars. They were designed with the intention of replicating the solar year and the …

Discover what a lunar month is, see how the lunar calendar works, and study the lunar-solar cycle and Metonic cycle. Study the lunar calendar v/s the solar calendar.

The Gregorian calendar was designed with the help of mathematicians and astronomers. It was also designed with the experience of the Julian calendar and other previous calendars such as …

The Gregorian Calendar: The Gregorian calendar was widely adopted by the 20th century. However, the 20th century saw many new countries adopt it. For example, Russia adopted it …