The Ephemeris list displays a list of 10 planetary positions computed every day at midnight, ZeroGMT. ZeroGMT is a virtual place situated at 0:0E 0:0N, with GMT as the ruling country. Don't forget to define them into the DB.

You can choose the time span for the scanning like for the Aspects List Chart. Double click on the Ephemeris Icon, and you will get a suitable dialog box.