"It's better to simply store the UTC time of the event, and nothing else." The whole point of the article is that /you cannot know with certainty the UTC time

"It's better to simply store the UTC time of the event, and nothing else." The whole point of the article is that /you cannot know with certainty the UTC time of a future event/ if you are starting with a wallclock time in a particular location. In this article, a 10:00 am meeting in Santiago has one UTC value prior to a new law, and a different UTC value after the new law. If you are saying everyone should "schedule in UTC" like you do, good luck imposing that on the world!