They are almost equal to the apparent position of the Sun relative to the stars. The Gregorian calendar is widely accepted as a standard calendar in the world. The Georgian calendar is a well-known example of a solar calendar. Another important type of calendar is the lunar calendar.
In a lunar calendar, months correspond to cycles of Moon phases. However, the months of the Gregorian calendar never correspond to cycles of the Moon phase.
There are various types of calendars that help determine the solar month; these are as follows:. Tropical Solar Calendars.
If the position of the world in its orbit around the Sun is estimated with reference to the Equinox, the purpose at which the orbit crosses the equinoctial circle, then it's dates accurately indicate the seasons. It means they're synchronized with the declination of the Sun. Such a calendar is named a tropical solar calendar. Sidereal Solar Calendars. When the position of the Earth is estimated with respect to the fixed stars, the dates indicate the zodiacal constellation near which the Sun can be found.
Such type of calendar is the sidereal solar calendar. Lunisolar Calendar. Lunisolar calendars are lunar calendars. As a rule, lunisolar calendars are the additional intercalation that keeps a rough synchronization with the solar year; also, with the seasons. Ordinarily, a lunisolar calendar has a whole number of lunar months. However, it can't indicate the position of Earth on its revolution around the Sun. The same is with a solar calendar.
Over the course of 33 years, there will be a lag of one year between solar and lunar calendars because of the successive epacts. Most places around the world use a solar calendar rather than a lunar one. However, Muslims and Jews follow a lunar calendar. Islamic calendars, otherwise known as Hijri calendars, are based on the lunar cycle, and its year consists of 12 lunar months.
The Hijri calendar plays an important role for religious purposes and the Muslim religious festivals are based on this calendar. A Jewish calendar uses primarily lunar definitions, and each month begins on the new moon, but the years are based on solar years. Chinese calendars are a type of lunisolar calendar, a combination of a lunar calendar and a solar calendar. Because there is an day difference between a solar year and a lunar year, people using a lunar calendar insert an extra 13th month into it every three years.
In the solar calendar, people add a leap day to the month of February every four years. Michel Charles has been a writing coach since and became a copywriter in People all over the world rely on two calendar systems. One solar which determines what day it is and one lunar which determines when festivals occur. While there are only a few countries in the world that use any incarnation of a lunar calendar in an official capacity, the echo of ages past, when lunar calendars were more prominent, still rings out in our modern lives.
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