For the longest time date-fns approach to timezones was "Do you really need timezones? Aren't UTC offsets enough?" which was pretty fatal for a date time librar

For the longest time date-fns approach to timezones was "Do you really need timezones? Aren't UTC offsets enough?" which was pretty fatal for a date time library, no matter how simple and light it makes your bundle. It looks like they did finally launch TZ support in September last year, and I haven't investigated it (and probably never will, given Temporal is coming a Temporal polyfill seems a better option)