In today's image, we see an old Roman coin showing the image of Julius Caesar. Julius Caesar was responsible for helping to incorporate the leap day into the calendar. This is needed because there are not an even number of days in a year, which causes the calendar to drift if not taken into account.

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This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link below the image to select the photo corresponding to the date of this podcast.

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