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Solunar tables are tables that fishermen and hunters use to determine the best days of the month and times of the day for catching fish and hunting game. Knowing the time of the tides, sunrise, and sunset help fishermen predict when fish are going to bite. For hunters, the tides are not a factor.
[10] Calayan Island publishes tide tables and solunar tables, daily forecasts for high tides and low tides, other fishing-related data such as the lunar phase, tidal coefficient, sun and moon rising and setting times, hours of maximum fish activity and weather conditions. This data is also useful for all fishing operations in the Calayan Island ...
Newcomb's Tables of the Sun (full title Tables of the Motion of the Earth on its Axis and Around the Sun) [a] is a work by the American astronomer and mathematician Simon Newcomb, published in volume VI of the serial publication Astronomical Papers Prepared for the Use of the American Ephemeris and Nautical Almanac. [1]
The Chinese, Buddhist, Burmese, Assyrian, Hebrew, Jain and Kurdish as well as the traditional Nepali, Hindu, Japanese, Korean, Mongolian, Tibetan, and Vietnamese calendars (in the East Asian Chinese cultural sphere), plus the ancient Hellenic, Coligny, and Babylonian calendars are all lunisolar.
The following table gives the number of days so far in cycle 25 against the number up to the same point in cycle 24, which have passed various thresholds for the numbers of sunspots. Counts SC 24
The oldest solar calendars include the Julian calendar and the Coptic calendar.They both have a year of 365 days, which is extended to 366 once every four years, without exception, so have a mean year of 365.25 days.
On a prograde planet like the Earth, the sidereal day is shorter than the solar day. At time 1, the Sun and a certain distant star are both overhead. At time 2, the planet has rotated 360° and the distant star is overhead again (1→2 = one sidereal day). But it is not until a little later, at time 3, that the Sun is overhead again (1→3 = one solar day). More simply, 1→2 is a complete ...
A solstice is the time when the Sun reaches its most northerly or southerly excursion relative to the celestial equator on the celestial sphere.Two solstices occur annually, around 20–22 June and 20–22 December.