Haskell's `time` (and its faster, lensier, API-compatible copy, `thyme`) handle these issues with aplomb and have been around a while. You'll also want to incl

Haskell's `time` (and its faster, lensier, API-compatible copy, `thyme`) handle these issues with aplomb and have been around a while. You'll also want to include timezone-series and timezone-olson for accurate TZ handling. https://hackage.haskell.org/package/time https://hackage.haskell.org/package/thyme https://hackage.haskell.org/package/timezone-series https://hackage.haskell.org/package/timezone-olson