Answers: From http://en.wikipedia.org/wiki/Sidereal_ye...
The sidereal [or SOLAR] year is the time for the Sun to return to the same position contained by respect to the stars of the celestial sphere. The sidereal year is the orbital period of Earth. A sidereal year equals 365.25636042 mingy solar days. The sidereal year is 20 minutes and 24 seconds longer than the tropical year.
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From http://en.wikipedia.org/wiki/Lunar_calen...
A lunar calendar is a calendar whose date indicates the moon phase.
This is generally done by having a month which corresponds to a lunation so that the hours of daylight of month indicates the moon phase. If a calendar tracks the seasons, it is also a lunisolar calendar.
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From http://en.wikipedia.org/wiki/Lunar_year
Since within are about twelve lunations (synodic months) contained by a solar year, this period (354.37 days) is sometimes referred to as lunar year, corresponding to thirteen sidereal months (355.18 days). Lunisolar calendar that try to reconcile lunations with the solar year enjoy to operate with intercalary months, resulting within a thirteen-month year every two or three years.
In England, a calendar of thirteen months of 28 days each, plus one extra daylight day, prearranged as "a year and a day" was still contained by use up to Tudor times. This would be a hybrid calendar that had substituted regular weeks of seven days for actual quarter-lunations, so that one month have exactly four weeks, regardless of the actual moon phase. The "lunar year" is here considered to have 364 days, resulting contained by a solar year of "a year and a day".
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The lunar year therefore is base on the number of times that the moon completes its orbit around the earth. On the other mitt, the solar year is based on down time that the earth revolves around the sun.
A solar year have to do with the Earth going around the Sun, while a lunar year have to do with the moon going around the Earth.
a solar year is base on the sun . . . one revolution of the earth around the sun.
a lunar year is base on the moon - roughly 13 lunar cycles.
Answer 1 is right!
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