Related by context. Frequent words. (Click for all words.) 80 equinoxes 75 equinox 71 spring equinox 70 vernal equinox 67 solstice 66 autumnal equinox 62 summer solstice 61 winter solstice 59 ecliptic 56 lunar calendar 55 constellations 54 Winter Solstice 53 occultation 53 liturgical calendar 52 celestial bodies 52 Saturnalia 52 Gregorian calendar 52 Samhain 51 Succot 51 zodiac 51 Mayan calendar 50 Candlemas 50 celestial 50 sunspots 50 sunspot activity 50 circadian clock 49 substorms 49 Summer Solstice 49 ancients 49 Pleiades 49 Perseids 48 astrological 48 Geminids 48 Babylonians 48 geomagnetic 48 climatological 48 moons 48 lunar eclipses 48 precession 48 Moharram 47 Zoroastrianism 47 zodiac signs 47 Sukkot 47 conjunctions 47 Tisha B'Av 47 Perseid meteor shower 47 lunar 47 pagans 47 Medieval Warm Period 46 perigee 46 Ophiuchus 46 pagan 46 Jainism 46 Makar Sankranti 46 meteor showers 46 equator 46 Mesoamerican 46 cosmological 46 Leonids 46 sundial 46 Jesus resurrection 46 epochs 46 Navaratri 46 Shavuot 45 Lunar Eclipse 45 Matariki 45 lunar eclipse 45 outer planets 45 ENSO 45 Uranus 45 Beltane 45 ellipse 45 astronomical observations 45 meteor shower 45 periodicity 44 solar eclipses 44 sunrises 44 planets 44 Elul 44 Vedic 44 hieroglyphs 44 Sunspots 44 ancient civilizations 44 Sedna 43 temporal 43 Rig Veda 43 Northern Hemisphere 43 millenniums 43 celestial objects 43 Little Ice Age 43 deities 43 ringed planet 43 rituals 43 calendar 43 Jupiter moons 43 supermoon 43 Fibonacci 43 Solemnity 43 sunspot 42 decadal 42 cultic