A bare "%s" in a zone line such as ...Zone Africa/Windhoek 2:00 Namibia %s...means that the abbreviations are completely specified in the Rule lines being used. In this case, the operative Rule lines are...Rule Namibia 1994 only - Mar 21 0:00 -1:00 WATRule Namibia 1994 2017 - Sep Sun>=1 2:00 0 CATRule Namibia 1995 2017 - Apr Sun>=1 2:00 -1:00 WAT...and so the abbreviations "WAT" and "CAT" are the result.@dashdashadoOn Thu, Jun 24, 2021 at 4:09 AM vaibhav shrivastava via tz <tz@iana.org> wrote:Please check FORMAT is marked as %s for these 2 timezoneAfrica/Windhoek & America/BelizeZone Africa/Windhoek 2:00 Namibia %sSame forAmerica/Belize -6:00 Belize %sRegards,Vaibhav