Concerning Dates in General. For Julian dates, the dates in Livy are the most famous for sure. There are, I believe, no ancient manuscripts of Livy, but there is an ancient epitome found on papyrus in Egypt which dates to Roman times. Livy gives the date of a lunar eclipse as occurring the night before 4 September 168 B.C. (using consular years). More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.