This message was in my Gmail spam folder due to "It has a from address in yahoo-inc.com but has failed yahoo-inc.com's required tests for authentication." - so it's possible nobody saw it.
Replying all to bump. On Fri, Jul 29, 2016 at 12:51 PM, Juan Dopazo <[email protected]> wrote: > Hello, > > I’ve been working on Yahoo Mail and we’ve been running into multiple > issues with timezones. Currently EcmaScript supports only creating Date > objects with the User Agent’s timezone. However, we need to be able to > operate with whatever timezone our users selected in their settings page. > In most cases we just need to render dates with the correct timezone and > this is currently available using the Ecma 402 APIs. However, in other > cases we need to make certain computations taking into account an arbitrary > timezone and this is not covered by either EcmaScript or Ecma 402. > > In particular, we need to answer the following questions: > > - Is a certain date in the current day/month/year? This means given a > Date object, is it in the current day for an arbitrary timezone? > - When is the start of the day/month for this timezone? > > Currently the only way to answer these questions is by calculating the > timezone offset for the timezone around the date we’re studying. And the > way to do that is to render a date using Intl.DateTimeFormat and recreate a > date object: https://gist.github.com/juandopazo/ > b52820e368739ed19cb206e3f3893166. > > Ideally, EcmaScript would allow developers to operate on a Date object for > an arbitrary timezone. Would date.setTimezone(/* IANA string identifier */) > work? I know it’s a problem that is in the middle between EcmaScript and > Ecma 402. > > Thank you, > > Juan Dopazo > > > _______________________________________________ > es-discuss mailing list > [email protected] > https://mail.mozilla.org/listinfo/es-discuss > >
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