I don't know about Mt. Athos in particular; the general case of trying to support Julian dates is complicated by needing to change the day-of-month associated with a time_t value without changing the day-of-week associated with the value. The advent of the 64-bit time_t extends the range of time_t values to include historical periods when the Julian calendar was in effect. It may or may not be worthwhile to try to change the handling of Julian-era time_t values; doing so would seem to require changes to both zic and to localtime. --ado -----Original Message----- From: Paul Eggert [mailto:eggert@cs.ucla.edu] Sent: Monday, April 23, 2007 6:37 PM To: tz@lecserver.nci.nih.gov Cc: mgpeter@pcc-services.com; evdokimos@gmail.com Subject: proposed change to 'zic' to support "outlandish" offsets Currently zic allows only GMT offsets in the range -24:00 to 24:00. And yet the recent query about Mt. Athos led me to think that in some cases it can be useful to allow GMT offsets outside the range, to approximate the Julian calendar. And at any rate zic should be able to generate whatever offset can be stored in the standard tz file format, if only for testing purposes.