The word Calendar has its origin from the Roman word Calends or Kalends meaning a method of distributing time into certain periods adopted for the purpose of civil life.
Thus a calendar may be defined as a system of reckoning time over extended intervals by combining various convenient periods of time.
A calendar is a method of counting the successive days in a systematic and continuous manner using convenient, repeated cycles called years. The measure of the year is calculated by studying the motion of the two prominent luminaries in the sky, namely the sun and the moon.
A solar year is the length of time from one vernal equinox to the next. Alternatively it could be the time between successive Uttarayanas (Winter solstice) or Dakshinayanas (Summer Solstice) of the Sun. The vernal equinox (first day of spring) is the midpoint between Uttarayana and Dakshinayanas. These solar movements define the seasons. The solar year is thus the interval of the cycle of the seasons.
Thus a calendar may be defined as a system of reckoning time over extended intervals by combining various convenient periods of time.
A calendar is a method of counting the successive days in a systematic and continuous manner using convenient, repeated cycles called years. The measure of the year is calculated by studying the motion of the two prominent luminaries in the sky, namely the sun and the moon.
A solar year is the length of time from one vernal equinox to the next. Alternatively it could be the time between successive Uttarayanas (Winter solstice) or Dakshinayanas (Summer Solstice) of the Sun. The vernal equinox (first day of spring) is the midpoint between Uttarayana and Dakshinayanas. These solar movements define the seasons. The solar year is thus the interval of the cycle of the seasons.