Javascript Date showing Wrong TimeZone "GMT+0521 (India Standard Time)"

Question

I am having simple question.

Why JavaScript show's wrong TimeZone if the date is after the year 1906

Please find the below screenshot for the same.

Seems fine here,. One thing I will point out though, `01-01-1905` is not a valid date constructor. You could try -> `1905-01-01` see if that helps.. — Keith, Jun 25 '18 at 10:20
I tried now with Chrome Console new Date("1905-01-01") -- output Sun Jan 01 1905 05:21:10 GMT+0521 (India Standard Time) new Date("1906-01-01") -- output Mon Jan 01 1906 05:30:00 GMT+0530 (India Standard Time) — pixelbyaj, Jun 25 '18 at 12:42
Chrome is behaving differently and IE is behaving differently. IE is showing 5:30 and chrome same 5:21 — pixelbyaj, Jun 25 '18 at 12:50
@Keith—it’s not a format supported by ECMA-262, so parsing is implementation dependent. It may return a valid Date or not. — RobG, Jun 25 '18 at 13:36
@Keith—the format YYYY-MM-DD will be parsed as UTC whereas just about everything else will be parsed as local so not really a good alternative. — RobG, Jun 25 '18 at 13:41

score 2 · Accepted Answer · answered Jun 25 '18 at 10:22

from wiki: https://en.wikipedia.org/wiki/Time_in_India

Though British India did not officially adopt the standard time zones until 1905, when the meridian passing east of Allahabad at 82.5° E longitude was picked as the central meridian for India, corresponding to a single time zone for the country (UTC+5:30). Indian Standard Time came into force on 1 January 1906, and also applied to Sri Lanka (then Ceylon). However, Calcutta time was officially maintained as a separate time zone until 1948 and Bombay time until 1955.[8]

and

Some older time zones were:

Bombay Time (UTC+04:51), Madras Time (UTC+05:21) Calcutta Time (UTC+05:54), Port Blair mean time

I am really amused by this. Thanks for such lovely info – pixelbyaj Jun 25 '18 at 12:49 — pixelbyaj, Jun 25 '18 at 12:49

Javascript Date showing Wrong TimeZone "GMT+0521 (India Standard Time)"

1 Answers1