ts changes to
official written time zone boundaries, and its <a
href="https://geodata.bts.gov/datasets/usdot::time-zones/about">Time
Zones dataset</a> maps current boundaries.
These boundaries are only for standard time, so the current map puts
all of Arizona in one time zone even though part of Arizona
observes <abbr>DST</abbr> and part does not.</dd>
<dt>Uruguay</dt>
<dd>The Oceanography, Hydrography, and Meteorology Service of the Uruguayan
Navy (SOHMA) publishes an annual <a
href="https://sohma.armada.m