Implementations of the new JavaScript Temporal object are starting to be shipped in experimental releases of browsers. This is big news for web developers because working with dates and times in JavaScript will be hugely simplified and modernized. Applications that rely on scheduling, internationalization, or time-sensitive data will be able to use built-ins for efficient, precise and consistent dates, times, durations, and calendars. We're a long way away from stable, cross-browser support, and there may be changes as implementations develop, but we can already take a look at Temporal as it stands now, why it's exciting, and what problems it solves.