Annoying javascript timezone adjustment issue

by

Everything is fine, try this:

new Date(Date.parse("2011-10-02T23:00+02:00")).getUTCHours()  //21

The date is parsed correctly (taking the timezone into account as expected). However when you simply print Date.toString() it shows the date in current browser timezone (one of the sins of Java Date object shamelessly copied to JavaScript…)

If you stick to getUTC*() family of methods you will get correct values (like in example above). The ordinary get*() methods are always affected by browser timezone (and not the timezone from the date you parsed, which is lost), hence often useless.

Another example: the 2011-10-03 02:00+03:00 is actually 23:00 on 2nd of October. But when you parse it (my current browser time zone is +0200 (CEST)):

new Date(Date.parse("2011-10-03T02:00+03:00"))  //Oct 03 01:00:00 GMT+0200

However current day of month in UTC is:

new Date(Date.parse("2011-10-03T02:00+03:00")).getUTCDate()  //2 (2nd of Oct)

More Related Contents:

  1. Why does Google prepend while(1); to their JSON responses?
  2. jQuery AJAX cross domain
  3. Serializing to JSON in jQuery [duplicate]
  4. AJAX cross domain call
  5. Post data to JsonP
  6. Convert JSON array to an HTML table in jQuery
  7. Can JavaScript connect with MySQL?
  8. Ajax request returns 200 OK, but an error event is fired instead of success
  9. Converting a string to JSON object
  10. Chrome refuses to execute an AJAX script due to wrong MIME type
  11. Why is it a bad practice to return generated HTML instead of JSON? Or is it?
  12. React JS – Uncaught TypeError: this.props.data.map is not a function
  13. How do I load a JSON object from a file with ajax?
  14. JSON security best practices?
  15. loading json data from local file into React JS
  16. jQuery AJAX polling for JSON response, handling based on AJAX result or JSON content
  17. Get JSON in a Chrome extension
  18. send json object from javascript to php
  19. React Js: Uncaught (in promise) SyntaxError: Unexpected token < in JSON at position 0
  20. AJAX call and clean JSON but Syntax Error: missing ; before statement
  21. jQuery AJAX Call to PHP Script with JSON Return
  22. console.log(result) prints [object Object]. How do I get result.name? [duplicate]
  23. Make XmlHttpRequest POST using JSON [duplicate]
  24. Execute function after Ajax call is complete
  25. Why does Google prepend while(1); to their JSON responses?
  26. SyntaxError: JSON.parse: unexpected character at line 1 column 1 of the JSON data
  27. Cross-Origin resource sharing and file://
  28. Trying to bind multiple InfoWindows to multiple Markers on a Google Map and failing
  29. creating highchart with ajax json data
  30. How to return an array from an AJAX call?

Leave a Comment