Day.js seems cool, but when I was evaluating these libraries I noticed the ‘startOf’ function doesn’t take a time zone argument… I guess it just presumes you wa

Day.js seems cool, but when I was evaluating these libraries I noticed the ‘startOf’ function doesn’t take a time zone argument… I guess it just presumes you want the system offset? https://day.js.org/docs/en/manipulate/start-of https://day.js.org/docs/en/manipulate/start-of I can’t trust a date/time library that’s blasé about time zones at the API level. Undefined behavior around time zones causes a steady stream of off-by-one bugs in your codebase if you’re not vigilant.