I need to convert a String to a Date object.
The date string is delivered in the following format:
"2015-01-28T00:00:00"
When I create a new Date, I get the previous date:
Entered: new Date("2015-01-28T00:00:00")
Result: Tue Jan 27 2015 17:00:00 GMT-0700 (Mountain Standard Time)
Does anyone know why this is occurring?
When you enter the following:
new Date("2015-01-28T00:00:00");
// Result: Tue Jan 27 2015 17:00:00 GMT-0700 (Mountain Standard Time)
the browser assumes that you are giving a date in GMT Time zone. So it will automatically convert the given date to your local date.
It's always a good idea to inform the browser of the timezone you are working on in order to prevent future problems:
new Date("2015-01-28T00:00:00-07:00");
// Result: Tue Jan 28 2015 00:00:00 GMT-0700 (Mountain Standard Time)
Actually, you aren't getting the previous date . . . you are getting that date, offset by the timezone difference.
Tue Jan 27 2015 17:00:00(Mountain Time) + 7 hours (time zone difference) = 2015-01-28T00:00:00 (GMT)
Or, in English, when it is 12:00 Midnight in Greenwich, England, it is 5:00 PM on the previous day in Denver, Colorado. ;)
It's the right date/time, just in a different timezone.
Related
1) My Accurate date is :Tue Apr 25 2019 00:00:00 GMT+0530
2) But in Calendar when i am selecting time i was get like this
Tue Apr 24 2019 16:56:00 GMT+0530
I was tried to fix below way
moment($scope.ProjectModel.projectStartDate).startOf('day')
But I am getting Tue Apr 24 2019 00:00:00 GMT+0530
This one is not correct, correct date: Tue Apr 25 2019 00:00:00 GMT+0530
So what i need to do to get this date ?
So, it seems like you want to set the date to the start of the next day, rather than the start of the current one. You can do it like this:
moment($scope.ProjectModel.projectStartDate).startOf('day').add(1, 'days');
Or, it seems like you want to round up if the provided date is noon or later, and down otherwise. In this case, just add 12 hours before going to the start of the day:
moment($scope.ProjectModel.projectStartDate).add(12, 'hours').startOf('day');
I'm working with a date that looks like this:
Mon Feb 04 2019 15:57:02 GMT-0700 (Mountain Standard Time)
and I'm trying to convert it to this:
2019-02-04T15:57:02.000Z
but for some reason my code always adds 7 hours and ends up being like this:
"2019-02-05T22:57:02.000Z"
Can anyone tell me what I'm doing wrong? Thanks a lot in advance!
Here's my code:
new Date(myTime as string).toISOString();
I'd use Moment.js, which is a decent date parsing and formatting library. To get what you're looking for, you'd use a statement like:
console.log(moment
.parseZone(
"Mon Feb 04 2019 15:57:02 GMT-0700 (Mountain Standard Time)",
"ddd MMM DD YYYY HH:mm:ss 'GMT'ZZ") // the format of the string presented
.local()
.format('YYYY-MM-DDTHH:mm:ss')); // the format of the output
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.24.0/moment.min.js"></script>
I've broken the single line out into parts so it's a bit easier to read. A few notes:
parseZone allows you to parse the "-0700" from the string.
local converts the date from the parsed time zone to the current time zone
format formats the date.
The format topic has a list of the formatting tokens used.
The Parse > String + Format topic lists the parsing tokens (which are the same as the formatting tokens for the most part).
Note that the output does not have a "Z" at the end; this is important because without the "Z", it is a local date. With the "Z" you are are actually specifying a date and time that is 7 hours earlier than the one you've been given.
I'm not sure how to get this as a one-liner, but this is one way:
var time = new Date('Mon Feb 04 2019 15:57:02 GMT-0700 (Mountain Standard Time)')
new Date(time.setHours(time.getHours() + 7)).toISOString()
"2019-02-05T12:57:02.000Z"
Your code is not adding hours to the input date. What is happening is that your date string is using a particular timezone GMT-0700 (Mountain Standard Time) and the time zone used in new Date().toISOString() is UTC GMT+0000 (UTC). So when in the Mountain Standard Time timezone is Mon Feb 04 2019 15:57:02, in the UTC timezone is actually 2019-02-05T22:57:02.000Z. There are your seven hours from GMT-0700 to GMT+0000.
EDITED
If you don't really care about time zones and want to obtain 2019-02-04T15:57:02.000Z from Mon Feb 04 2019 15:57:02 GMT-0700 (Mountain Standard Time) you could just strip everything after GMT to let new Date() think it is an UTC date.
var timeString = 'Mon Feb 04 2019 15:57:02 GMT-0700 (Mountain Standard Time)';
new Date(timeString.substr(0, timeString.indexOf('GMT') + 3));
2019-02-04T15:57:02.000Z
I have a database where I have put down timestamps that are converted to UTC.
Now, when I am on PST, I convert 2 timestamps in Chrome, which get back to the following dates:
new Date(1446274800000)
Sat Oct 31 2015 00:00:00 GMT-0700 (PDT)
new Date(1448265600000)
Mon Nov 23 2015 00:00:00 GMT-0800 (PST)
They differ in timezone! How is this possible? I always just want to get back the PST time (or, preferably, the UTC time they were stored in).
Looks like it's daylight savings time.
I'm trying to subtract 1 hour from the current date, I'm using this code:
var date = new Date();
// date is **Fri Apr 03 2015 16:47:33 GMT+0100 (GMT Standard Time)**
var uploadDateFilter = new Date(new Date(date).setHours(date.getHours()-1)).toISOString();
//now date is **Fri Apr 03 2015 14:47:33 GMT+0100 (GMT Standard Time)**
There's less two hours instead of just one. What am I missing here?
Your code works when looking at the elements in the same format.
<div class="original"></div>
<div class="updated"></div>
Using jQuery to post the information ... with your code, as is.
$(".original").text(date.toISOString());
$(".updated").text(uploadDateFilter);
Results in ...
2015-04-03T16:00:23.441Z
2015-04-03T15:00:23.441Z
http://jsfiddle.net/rfornal/5nma5uhr/
You don't need .toISOString(), but for me it works :
var date = new Date();
var uploadDateFilter = new Date(new Date(date).setHours(date.getHours()-1));
console.log(date);
console.log(uploadDateFilter);
Console output :
Fri, 03 Apr 2015 15:59:48 GMT
Fri, 03 Apr 2015 14:59:48 GMT
http://repl.it/gxL
The reason appears to be daylight saving check this my fiddle.
For me in the UK the clocks went forward on Mar 29, 2015. Checking the effect of new Date().toISOString() before and after this date, during daylight saving the result is one hour less.
How can I display a date to behave like that day regardless of the users time-zone?
>>> new Date('2013-09-17')
Date {Mon Sep 16 2013 20:00:00 GMT-0400 (Eastern Standard Time)}
I'm trying to use the jquery datepicker formater, however when I pass the date object it's off by a day.
How can I make sure that the users timezone is disregarded?
OK, I split the string and passed them as parameters for my expected result.
>>> d = '2013-09-17'.split('-'); new Date(d[0],d[1]-1,d[2]);
Date {Thu Oct 17 2013 00:00:00 GMT-0400 (Eastern Standard Time)}