A tropical year or solar year (or tropical period) is the time that the Sun takes to return to the same position in the sky – as viewed from the Earth...

average (mean) year length of 365.2422222 days, close to the length of the mean tropical year, 365.24219 days (relative error of 9·10). In the year 2800 CE,...

The following is a list of tropical cyclones by year. Since the year 957, there have been at least 12,791 recorded tropical or subtropical cyclones in...

the light-year is the product of the Julian year (365.25 days, as opposed to the 365.2425-day Gregorian year or the 365.24219-day Tropical year that both...

Southernmost. This means that the tropical zone includes everywhere on Earth which is a subsolar point at least once during the solar year. Thus the maximum latitudes...

calendar year incorrectly summarised Earth's tropical year as 365.25 days, the Gregorian calendar makes these exceptions to follow a calendar year of 365...

Calendar reform Common year Fiscal year ISO 8601 ISO week date Leap year Model year Tropical year Seasonal year "calendar year". Merriam-Webster. Retrieved...

the precession of the equinoxes. The sidereal year is 20 min 24.5 s longer than the mean tropical year at J2000.0 (365.242 190 402 ephemeris days). At...

correctly this system could have allowed the Roman year to stay roughly aligned to a tropical year. However, since the pontifices were often politicians...

whole numbers facilitates the construction of a lunisolar calendar. A tropical year (about 365.24 days) is longer than 12 lunar months (about 354.36 days)...

1955, the tropical year, considered more fundamental than the sidereal year, was chosen by the IAU as the unit of time. The tropical year in the definition...

make the average calendar year 365.2425 days long, more closely approximating the 365.2422-day 'tropical' or 'solar' year that is determined by the Earth's...

non-SI unit for use in astronomy. Before 1984, both the Julian year and the mean tropical year were used by astronomers. In 1898, Simon Newcomb used both...

assumes that a tropical year is exactly 127⁄19 times that, i.e., about 365.2468 days. Thus it overestimates the length of the tropical year (365.2422 days)...

a tropical solar calendar [citation needed]. The duration of the mean calendar year of such a calendar approximates some form of the tropical year, usually...

coolest month, and feature hot temperatures all year-round. Annual precipitation is often abundant in tropical climates, and shows a seasonal rhythm but may...

duration of a tropical year is 365.24219 days, while the long-term average duration of a lunar year is 354.36707 days, the average lunar year is (365.24219...

calendar. A tropical year is approximately 365.2422 days long and a synodic month is approximately 29.5306 days long, so a tropical year is approximately...

with the tropical year, which does not contain an exact number of days. The common year of 365 days has 52 weeks and one day, hence a common year always...

the period in each year when most tropical cyclogenesis occurs in the Atlantic. However, the formation of subtropical or tropical cyclones is possible...

of arc per year, or 1 degree every 71.6 years. At present, the rate of precession corresponds to a period of 25,772 years, so tropical year is shorter...

Gregorian times and dates vary slightly from year to year as the Gregorian calendar shifts relative to the tropical year. These variations remain within less...

of each year when most tropical and subtropical cyclones form in the basin, which is west of 90°E and south of the Equator. However, tropical cyclones...

Additionally, the synodic month does not fit easily into the solar (or 'tropical') year, which makes accurate, rule-based lunisolar calendars that combine...

accurate than Ptolemy's, and their calculation of the length of the tropical solar year was more accurate than that of the Spanish when the latter first...

sidereal year. This is the orbital period in an inertial (non-rotating) frame of reference. Orbital periods can be defined in several ways. The tropical period...

longest, and shortest days of the tropical year), while Hindu astrology measures along the equatorial plane (sidereal year). Western astrology is a direct...

storms are referred to as "tropical cyclones". In modern times, on average around 80 to 90 named tropical cyclones form each year around the world, over half...

in tropical years can be computed by dividing the difference between the sidereal year and tropical year by the length of the tropical year. Tropical year...

heading southward. Because of differences between the calendar year and the tropical year, the September equinox may occur from September 21 to 24. At the...