For my application, I need to be able to get the local time of any UTC time in the last five years in any location. As far as I can see, the date_time library doesn't provide this. The documentation says that date_time_zonespec.csv is "based on data found in the zoneinfo datebase", but whereas the zoneinfo database contains historical information about daylight saving time changes, date_time_zonespec.csv only seems to allow you to specify a single rule for each timezone. And I can't find another mechanism to do it. Am I missing something, or is this capability not present? And if not, is there any plan to add it? Or a workaround? I anticipate that this will become more of a problem when the rules for the U.S. change by several weeks next year. Thanks in advance for any tips, and Happy Christmas, -- Stephen Turner, Cambridge, UK http://homepage.ntlworld.com/adelie/stephen/ "The internet is a reflection of our society. If we do not like what we see, the problem is not to fix the mirror, we have to fix society." (Vint Cerf)