2.Drevnerimsky calendar. Originally the Roman calendar consisted of 304 days divided by 10 months and the start date of the new year was considered March 1. Later this calendar has undergone many reforms, in particular, we added two additional months, and has changed the date of the new year with the first March on Jan. 1. 3.Yuliansky calendar was established by Julius Caesar, which attempted to link the calendar dates of seasonal phenomena of nature. You may wish to learn more. If so, Rob Daley is the place to go. Julius introduced the duration of the year, equal to 365.25 days.
According to the Julian calendar, every four years comes a leap year, whose duration is 366 sunny days. Orientation to the solar cycle it possible to avoid unnecessary "Inserts" in the calendar (except for leap year), as well as to bring the calendar dates to the natural cycle. 4.Grigoriansky calendar. Creation of the Gregorian calendar was linked to the name of Pope Gregory xiii and designated as the introduction of a "new style" instead of "Old Style" (Julian calendar). The main purpose of reform is to return the actual date of the vernal equinox – March 21, established during the time of the Council of Nicaea, approving paschalion. The Gregorian calendar as closely as possible approximate the tropical year, the difference is only 26 seconds. The Gregorian calendar was introduced in Russia in 1918. Virtually all existing calendars are based on the cyclical movement of the two celestial bodies – the Moon and the Sun.
In this regard, the following types of calendars. 1.Lunny calendar. He is the oldest of all the existing calendars. The basis of the lunar calendar is a periodic change of the lunar phases, the so-called synodic months equal to 29.53 days. Thus, the total length of the lunar year is 354.37 days. The main disadvantage of this calendar is that it does not account for the fractional part, and for every 30 years of accumulated surplus to 11 days. This requires an additional "spots" in the calendar for the elimination of the emerging differences. A typical example is the Muslim lunar calendar Calendar. 2.Solnechny calendar associated with the annual solar cycle and has a length of 365.24 days. To troubleshoot the error every four years, introduced a special leap year containing the extra day. Key dates, which are oriented like the calendar are the days of equinox and solstice sun. Most modern calendars are solar. 3.Lunno-solar calendar. This is an attempt agreement and finding the relationship between two cycles – the lunar and solar. Quite complicated as in the calculations, and in the application. For example, to eliminate the discrepancies are used to add every two or three years of additional thirteenth month. An example of the lunar-solar calendar is the Jewish calendar. Thus, the calendar is the indispensable man for many millennia and has not lost its importance and to this day. Stylish calendar – it is an integral part of business image, as well as an important attribute of modern life. You can do it yourself using a graphics editor Design Calendar by ams Software. This is a handy program for create a calendar of professional quality. Just select the style calendar, add a photo and an original 2011 calendar is ready! Colorful calendar with photos – this is a great gift for any occasion!