tion (because of 3am -&gt; 4am DST
forward clock adjustment, see the below example).</p>
<p>In contrast, hours, minutes, and seconds are well defined time
intervals, and these are guaranteed to always produce time offsets
exactly as specified (e.g. for EET timezone, '8:00&nbsp;Mar&nbsp;27&nbsp;1999&nbsp;+2
days' = '8:00&nbsp;Mar&nbsp;29&nbsp;1999', but since there is 1-hour DST forward
clock adjustment that occurs around 3:00&nbsp;Mar&nbsp;28&nbsp;1999, the actual
time interval between 8:00&nbsp;Mar&nbsp;27