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`toDate` returns unexpected date in America/Sao_Paolo timezone. #992

inytar opened this issue Nov 29, 2018 · 2 comments


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commented Nov 29, 2018

On daylight switching (2018-11-04) in Sao Paolo Brazil the toDate function returns a different date object then expected:

const toDate = require('date-fns/toDate');
const getDay = require('date-fns/getDay');

const nativeSunday = new Date(2018, 10, 4)
// 2018-11-04T03:00:00.000Z
// 0
const dateFnsSunday = toDate('2018-11-04')
// 2018-11-04T02:00:00.000Z
// 6

This problem only manifests itself if running in the Sao Paolo timezone. This can be tested by running:

env TZ='America/Sao_Paolo' node testScript.js

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commented Nov 29, 2018

#972 shows a similar issue for the formatting function.

@kossnocorp kossnocorp added the 🐛 Bug label Dec 7, 2018

kossnocorp added a commit that referenced this issue Dec 7, 2018

@kossnocorp kossnocorp added this to the v2 beta milestone Dec 10, 2018


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commented Dec 11, 2018

This fix for this problem was released with v2.0.0-alpha.26 and v1.30.1.


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