The dog days of summer are upon us.
The Dog Star, Sirius, is the brightest star in the sky. Under the right conditions, Sirius can sometimes be seen by the naked eye even during daylight hours. It can be seen from almost every inhabited region on earth.
During the dog days, however, Sirius cannot be seen because it is too close to the sun and is lost in the sun's glare even during dawn and dusk hours. Ancients believed that it was the combined effect of Sirius and the sun, when aligned closely, that made the especially hot days we enjoy now.
Source: WABE 90.1 Star Journal
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