Hi, Unless I'm missing some of the data files, the only rule TYPE ever used is "-" The man page states: TYPE Gives the type of year in which the rule applies. If TYPE is - then the rule applies in all years between FROM and TO inclusive. If TYPE is something else, then zic executes the command yearistype year type to check the type of a year: an exit status of zero is taken to mean that the year is of the given type; an exit status of one is taken to mean that the year is not of the given type. What other types except for "-" are allowed? Parsed files: africa, antarctica, asia, australasia, backward, europe, northamerica, pacificnew, solar87, solar88, solar89, southamerica, Systemv