Egean Reckoning (e-GAY-ya [Egea])
Egean Reckoning (abbreviated ER) is a system for counting the passage of time. It is used by all civilized nations of the Heartlands and surrounding areas. Egean Reckoning uses the Calendar of Harptos, also known as the imperial calendar, which was conceived by the ancient Egean sage named Harptos. The Reckoning began with year 1 on the 1st day of the Moon of Autumn, marking the day on which Harptos's calendar was adopted into common use in the fledgling nation of Egea. Periods in the imperial calendar are based on the movements of Iona and Etro -- the sun and the moon -- across the sky. The current imperial year is 2501 ER.
Year: 12 months and 5 days (365 days total)
Month: 3 tendays or weeks
Tenday: 10 days
Day: 24 hours