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Instead, the term "dog days of summer" has deep historical roots dating back thousands of years and is actually intertwined with the movement of the stars.
The ancient Greeks and Romans are thought to have helped coin the term in reference to the star, Sirius, or Dog Star, that rose just before the sun in late July.
"The 10 to 11 day difference between solar and lunar calendars is the key." Another reason Sirius's position in the sky does not correspond with the hottest days of the year for some people is because of their latitude, which will change when the astronomical "dog days" occur.
Even now, the "dog days" for the ancient Greeks no longer correspond to the ones of today because of the Earth's movement.
Forgery may be the act not of the creator himself but of the dealer who adds a fraudulent signature or in some way alters the appearance of a painting or manuscript.
Restoration of a damaged painting or manuscript, however, is not considered forgery even if the restorer in his work creates a significant part of the total work.
The position of the stars overhead was an intrinsic part of ancient life, which shaped religious beliefs, marked seasons and even helped people navigate long journeys by land and sea.While the movement of stars was an exceptional means of keeping track of time for ancient people, the accuracy of the "dog days" corresponding with summer heat does not hold true today based on a variety of factors.Unlike today’s solar calendar, the ancient population marked a month’s time by the duration of a moon phase.If such facsimiles are detached from the volumes that they were intended to illustrate, they may deceive the unwary.
The commonest motivation for fraudulence is monetary gain.The words month and moon have similar origins in language for this reason.