Discover how JavaScript handles time with POSIX, why it ignores leap seconds, and how techniques like smearing ensure smoother transitions. Learn when precision matters and why timekeeping isn’t as simple as it seems.

This article explains how to use JavaScript's Temporal API to manage time durations effectively. It covers key topics like creating and balancing Temporal.Duration objects, handling complex scenarios such as time zones and Daylight Saving Time (DST), and comparing durations for accurate time calculations.

Why I’m excited about the new Temporal API in JavaScript: finally, easy and accurate date handling with time zones using ZonedDateTime. Say goodbye to the headaches of traditional Date objects.