It depends on where on the Earth you are, and what time of night you are looking. Almost any of them could be overhead at the right place and time.
That varies minute to minute. It is currently 10:32 PM Pacific Time on Sunday, January 18, 2015. I live in Sacramento, CA. The constellation Auriga is the nearest to being directly overhead at this moment. In another 30 minutes, it will be something different.
To see it best is to see it overhead. That would be in Winter - in the northern hemisphere.
It is a reference to three bright stars that can be seen in northern hemisphere. Altair in the constellation Aquila, forms the top of the triangle. Vega in the constellation Lyra is the brightest star and is almost directly overhead. Deneb in the constellation Cygnus is the third star.
in wintertime - January
In January, the Leo constellation rises in the east during the late evening and is visible throughout the night. This positioning is due to the Earth's orbit around the Sun, which causes different constellations to be visible at different times of the year. Leo's appearance in the east during January makes it a prominent constellation in the night sky during this time.
At 10:00 PM in Placerville, California tonight, the constellation directly overhead would be Ursa Major, which includes the well-known Big Dipper asterism. Look for this constellation in the northern sky.
Aries is best viewed at about 9 PM during the months of December and January.
Orion is a prominent constellation in the winter sky in the northern hemisphere. Its location near the celestial equator and its bright stars make it easy to spot during this season. The constellation's position overhead in the evening also makes it more visible in winter.
Taurus constellation is located at approximately 4 hours right ascension and 15 degrees declination.
Frankenstein - 2015 was released on: Armenia: 15 January 2015 Azerbaijan: 15 January 2015 Belarus: 15 January 2015 Kazakhstan: 15 January 2015 Netherlands: 15 January 2015 Russia: 15 January 2015 UK: 16 January 2015 USA: 16 January 2015
The Hercules constellation is best seen in the Northern Hemisphere during the months of May through October. It is most visible in the evening sky during the summer months. Look for it high overhead between the constellations Boötes and Lyra.
The constellation Leo is centered around the coordinates RA 10h 0m 0s and Dec +15° 0′ 0″. These coordinates can help astronomers locate the constellation in the celestial sphere for observation and study.