Editing Solar calendar (section)

===Sidereal solar calendars===
{{Further|Sidereal time}}{{Expand section|date=January 2017}}
If the position of the Earth (see above) is reckoned with respect to the fixed stars, then the dates indicate the [[zodiacal constellation]] near which the Sun can be found. A calendar of this type is called a '''sidereal solar calendar'''.<ref>Helen R. Jacobus. (2014). Zodiac Calendars in the Dead Sea Scrolls and Their Reception : Ancient Astronomy and Astrology in Early Judaism. Brill
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The mean calendar year of such a calendar approximates the [[sidereal year]].

Leaping from one lunation to another, but one Sidereal year is the period between two occurrences of the sun, as measured by the stars' solar calendar, which is derived from the Earth's orbit around the sun every 28 years.<ref>Leofranc Holford-Strevens. (2005). The History of Time: A Very Short Introduction. OUP Oxford</ref>

Indian calendars like the [[Hindu calendar]], [[Tamil calendar]], [[Bengali calendar]] (revised) and [[Malayalam calendar]] are sidereal solar calendars. The [[Thai solar calendar]] when based on the [[Hindu calendar|Hindu solar calendar]] was also a sidereal calendar. They are calculated on the basis of the apparent motion of the Sun through the twelve [[Zodiac#Constellations|zodiacal signs]] rather than the tropical movement of the Earth.