dayjs: [BUG] dayjs.tz do nothing

Describe the bug

moment.tz("2022-06-13T13:47:25Z", "America/New_York").format('YYYY-MM-DD HH:mm') -> 2022-06-13 09:47
dayjs.tz("2022-06-13T13:47:25Z", "America/New_York").format('YYYY-MM-DD HH:mm') -> 2022-06-13 13:47
dayjs.tz("2022-06-13T13:47:25Z", "Asia/Tokyo").format('YYYY-MM-DD HH:mm') -> 2022-06-13 13:47

Expected behavior dayjs.tz look like do nothing

Information

Day.js Version dayjs.org site console

About this issue

Original URL
State: closed
Created 2 years ago
Comments: 23 (7 by maintainers)

Most upvoted comments

@iamkun @sxzz is this the intented behavior of dayjs.tz("2014-06-01 12:00", "America/New_York") or is this a real bug and both dayjs().tz() and dayjs.tz() should give the same result ? If so will it be fixe in dayjs 2.0 ?

kravorkid on Jun 30, 2022

@kravorkid emmm, Ok, it’s so weird. Maybe change the doc can help more people. Time Zone
in this link, two different usage seems to be the same, but actually different.

dayjs.extend(utc)
dayjs.extend(timezone)

dayjs.tz("2014-06-01 12:00", "America/New_York")
dayjs("2014-06-01 12:00").tz("America/New_York")

dayjs.tz("2014-06-01 12:00", "America/New_York").format() -> 2014-06-01T12:00:00-04:00
dayjs.tz("2014-06-01 12:00", "America/New_York").format("YYYY-MM-DD HH:mm") -> 2014-06-01 12:00
dayjs("2014-06-01 12:00").tz("America/New_York").format() -> 2014-06-01T00:00:00-04:00
dayjs("2014-06-01 12:00").tz("America/New_York").format("YYYY-MM-DD HH:mm") -> 2014-06-01 00:00

lilonghe on Jun 30, 2022