Roman calendar ancient Greek calendars; and the Gregorian calendar, which refined the Julian system to bring it into still closer alignment with the solar year and is the basis of the current international standard. Roman dates were counted inclusively forward to the next of three principal days: the first of the month (the kalends), a day less than the middle of the month (the ides), and eight days—nine, counting inclusively—before this (the nones). The original calendar consisted of 10 months beginning in spring with March; winter was left as an unassigned span of days. These months ran for 38 nundinal cycles, each
Dhanu (month) (astrology). Dhanu (month) Dhanu, or Dhanus, is a month in the Hindu calendar, Malayalam calendar and others. It corresponds to the zodiacal sign of Sagittarius, and overlaps with approximately the second half of December and about the first half of January in the Gregorian calendar. In Vedic texts, the Dhanus month is called Sahas (IAST: Sahas), but in these ancient texts it has no zodiacal associations. The solar month of Dhanu overlaps with its lunar month Pausha, in Hindu lunisolar calendars. The Dhanu marks the winter season for the Indian subcontinent. It is preceded by the solar month of Vṛścik‌‌‌a,