il.uy/index.php/servicios/datos-astronomicos" hreflang="es">almanac
(in Spanish)</a>.</dd>
</dl>
</section>

<section>
<h2 id="costs">Costs and benefits of time shifts</h2>
<p>Various sources argue for and against daylight saving time and time
zone shifts, and many scientific studies have been conducted. This
section summarizes reviews and position statements based on
scientific literature in the area.</p>
<ul>
<li>Carey RN, Sarma KM.
<a href="https://bmjopen.bmj.com/content/7/6/e014319.long">Impact of
dayl