Day means “solar day” on Ceres, too: http://www.jpl.nasa.gov/news/news.php?feature=4555 <http://www.jpl.nasa.gov/news/news.php?feature=4555> -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://pairlist6.pair.net/pipermail/leapsecs/attachments/20150417/d6067490/attachment.html>