Daylight saving is not being considered while using date-fns

The offset is not considering for pacific timezone. Right now we are in PDT but the timezone always formats the time according to PST. Rather than using GMT-07:00 rather I always end up getting GMT-08:00. The example is mentioned below

require("date-fns/package.json"); // date-fns is a peer dependency. 
var dateFnsTz = require("date-fns-tz")

const laTimeZone = 'America/Los_Angeles'
const laDate = dateFnsTz.utcToZonedTime(new Date('2020-02-02T06:59:00z'), laTimeZone);
console.log(laDate)

// WRONG RESULT - Sat Feb 01 2020 22:59:00 GMT-0800 (Pacific Standard Time)

// CORRECT RESULT - Sat Feb 01 2020 23:59:00 GMT-0700 (Pacific Standard Time)

Is there any way to accommodate the DST along with the timezone

[shivkumarganesh]

We are having almost the same problem, but when converting zonedTimeToUtc:

const date = new Date("2020-10-19T00:00:00.000Z") // This is Madrid local time zone, I want the UTC
const utcDate = zonedTimeToUtc(date, 'Europe/Madrid');
console.log(utcDate.toISOString()) // 2020-10-18T23:00:00.000Z

This is wrong as it should be 2020-10-18T22:00:00.000Z, -1 for being in Madrid and -1 for being in DST.

Use parse in order to parse a date do not use new Date. new Date actually attaches the timezone information alongside and that kinda messes things up. Use ‘yyyy-MM-dd'T'HH:mm:ss.SSSz’ to parse your date and then do the required. Let me know if you find proper results.

You can refer https://runkit.com/shivkumarganesh/daylightsavingissue

var df = require("date-fns") var dateFnsTz = require("date-fns-tz") const parsedDate = df.parse("2020-10-19T00:00:00.000Z","yyyy-MM-dd\'T\'HH:mm:ss.SSS\'Z\'",new Date()); const utcDate = dateFnsTz.zonedTimeToUtc(parsedDate, 'Europe/Madrid'); console.log(utcDate.toISOString()) // 2020-10-18T22:00:00.000Z

[DanielRamosAcosta]

We are having almost the same problem, but when converting zonedTimeToUtc:

const date = new Date("2020-10-19T00:00:00.000Z") // This is Madrid local time zone, I want the UTC
const utcDate = zonedTimeToUtc(date, 'Europe/Madrid');
console.log(utcDate.toISOString()) // 2020-10-18T23:00:00.000Z

This is wrong as it should be 2020-10-18T22:00:00.000Z, -1 for being in Madrid and -1 for being in DST.