https://mortenankerstjerne.com/tags/coordinated-universal-time/ Recent content in Coordinated Universal Time on Morten Ankerstjerne Hugo en-us Tue, 29 Apr 2025 08:24:43 +0200 https://mortenankerstjerne.com/posts/2025/daylight-saving-time/ Mon, 28 Apr 2025 00:00:00 +0000 https://mortenankerstjerne.com/posts/2025/daylight-saving-time/ <p><em>Demo scripts <a href="#demo-scripts">below</a>.</em></p> <h2 id="background">Background</h2> <p>Most data professionals will have to deal with dates at one point or another. Most often, we don&rsquo;t have the luxury of choosing the data types in the source systems we work with, so some interesting challenges may come up.</p> <p>One such challenge is daylight saving time (or summer time, in Europe), when people turn their clocks back or forward an hour to have more hours of sunlight during our daily life (this is not universal, but is observed throughout most of Europe and North America, <a href="https://en.wikipedia.org/wiki/Daylight_saving_time_by_country">among other places</a>).</p>