I'm forwarding this message from Francois Rouleau, who is not on the time zone mailing list. Those of you who are on the list, please direct replies appropriately. --ado From: Francois Rouleau [mailto:rouf0007@gmail.com] Sent: Saturday, May 23, 2009 3:17 To: tz@elsie.nci.nih.gov Subject: Explain field Could you please explain to me what seem to be a contradiction in the documentation (File: "tzCode2009e\Zic.8.txt") For the Rule part, you say that the field "FROM" ... "Gives the first year in which the rule applies". Then from the example you say that ... "After 1894-06-01 at 00:00 Swiss daylight saving rules (defined with lines beginning with "Rule Swiss") apply"... but the "Rule Swiss" begin in 1940. There is a laps in time here that I don't understand. Maybe should you also update this document to reflect the change in file for Swiss. Thanks Francois Rouleau