太陽活動期国際観測年の英語

a calendar based on solar cycles

the branch of astronomy that deals with the sun

a comet that approaches the sun periodically, called periodic comet

an instrument used for astronomical observation, called heliometer

a synodic period between the sun and a certain planet

The earth goes round the sun―revolves round the sun―in a year.

a calendar based on both lunar and solar cycles

the great circle representing the apparent annual path of the sun

the solar calendar on which one year is equal to the time that the earth takes to go once around the sun

Around the World in a Solar-Cell Plane

The earth revolves round the sun―moves round the sun―goes round the sun.

the revolution of the earth around the sun

one-twelfth of a solar or tropical year

the interval between one new moon and the next

the revolution of the earth about the sun takes one year

the solar [lunar] calendar

atmospheric phenomena accompanying the daily appearance of the sun

in astronomy, the apparent annual path of the sun through the heavens, called the ecliptic

the ability to see the sun at midnight during midsummer in the polar regions

The planets revolve round the sun.

days of the menstrual period

any lunisolar month in the Hindu calendar

It was in this year that the solar calendar was introduced into Japan.

to take the sun―shoot the sun

The earth revolves round the sun―goes round the sun―moves round the sun―once a year.

quarter-days

the season from September to November in the northern hemisphere

of a planet, to revolve around the sun

in Taoism, the year of change

The sun is distant from the earth.