Sosigenes of Alexandria

An ancient Greek astronomer, mathematician and philosopher (1st century BC) from Alexandria in Egypt.

In 46 BC, after a command by Julius Caesar, he reformed the calendar of 365 days to the new Julian calendar and he added 1 day every four years. To get this correction, year 46 BC lasted 445 days.

Nicole Panayiotatou, Grade 2, 2nd Junior High School of Paralia.

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