What is a calendar?
Today everyone uses the calendar. Our article will tell about what a calendar is. A calendar is a gauge for time, holidays and events. There are several types of calendars, for example, solar, lunar, Chinese, church and other kinds of calendars.
How calendars appeared
The need for time measurement appearedpeople for a very long time. The first calendars arose many years ago at the beginning of human civilization. People quickly learned how to measure time intervals and compare them with certain phenomena, which are repeated periodically, for example, changing the phases of the moon, changing the night and day, changing the seasons. Without the use of any kind of time, people could not communicate with each other, live, trade, plan their activities and activities, and engage in farming.
At the very beginning, such an account of time was sufficientprimitive, but as the human culture developed and the practical need of people increased, this calendar was improved. It appeared such concepts as the month, year, week.
Long ago, every city, every tribe and every state had its own calendar, which was differently composed of months, days and years.
There was a solar, lunar, solar-lunarthe calendar. Approximately in the year 2500 BC, such a lunar calendar was used by the Sumerians. The solar-lunar calendar was used by the peoples of ancient China and India. To date, all the people in the world use the solar calendar, which was inherited from the ancient Romans.
Calendar implies a certain systemaccounts for sufficiently large time intervals. The very word "calendar" comes from the Latin "kaleo", which means "proclaim" and "calendarium" - a "debt book". In ancient Rome, the beginning of any month was proclaimed especially. Also on the first day of the month, payment of interest on debts was accepted.
What is the lunar calendar? The lunar calendar is a kind of calendar based on the synodic month, that is, the period of the phase change of the moon.