I think these dates are from some historical database, as they are labeled "BC". And the days might refer to some Epoch of ancient calendars, maybe the Chinese Calendar whose Epoch was 105 BC (at least if we can trust Wikipedia: https://en.wikipedia.org/wiki/Chinese_calendar )
Alberto Monteiro ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
