Tulā calculates the duration of Tula to be 29 days, 21 hours, 26 minutes and 24 seconds. In contrast, the "Arya Siddhanta" calculates the duration of the Tula month to be 29 days, 21 hours, 40 minutes and 48 seconds. The Indian solar month names are significant in epigraphical studies of South Asia. For example, "Tula" month, along with other solar months, are found inscribed in medieval era Hindu temples. Tula is also an astrological sign in Indian horoscope systems, corresponding to Libra (astrology). Tulā Tulā is one of the twelve months in Indian solar calendar. Tula corresponds to the zodiacal
Lunar phase eastern horizon at one moment sees it on the western horizon about 12 hours later. This adds an oscillation to the apparent progression of the lunar phases. They appear to occur more slowly when the Moon is high in the sky than when it is below the horizon. The Moon appears to move jerkily, and the phases do the same. The amplitude of this oscillation is never more than about four hours, which is a small fraction of a month. It does not have any obvious effect on the appearance of the Moon. However, it does affect accurate calculations of