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English
Features using the positional indication of the Sun
Altitude line (30°)
Celestial equator
Sun at the autumn
equinox
Sun at the summer
solstice
Sun at the vernal
equinox
Sun at the winter
solstice
Azimuth line (east)
Sunrise/sunset line
Sun at January 1
Altitude −18° line
Ex.: sunrise time of January 1
Содержание CAN18
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