/www.nist.gov/pml/time-and-frequency-division/popular-links/walk-through-time">A
Walk through Time</a>
surveys the evolution of timekeeping.</li>
<li>The history of daylight saving time is surveyed in <a
href="http://www.webexhibits.org/daylightsaving/">About Daylight
Saving Time – History, rationale, laws &amp; dates</a> and summarized in
<a href="http://seizethedaylight.com/dst/">A Brief
History of Daylight Saving Time</a>.</li>
<li><a href="https://www.laphamsquarterly.org/roundtable/time-lords">Time
L