topic Re: Javascript Date.Now() in local time in ArcGIS JavaScript Maps SDK Questions

Javascript Date.Now() in local time

MeleKoneya — Tue, 01 Dec 2015 00:02:42 GMT

I am writing the current date and time to an attribute in an SDE feature class that is being accessed via a FeatureServer when an edit occurs with the following:

feature.attributes.sfd_edit_date = Date.now();

It works great, except the time is in UTC and not local when I view it in ArcMap.

I understand that Date.now() gets me the current date in milliseconds, but how can I get the time to be the current local time and not the UTC time?

Thanks.

Mele

Re: Javascript Date.Now() in local time

SteveCole — Tue, 01 Dec 2015 00:32:30 GMT

There's lots of solutions online. Here's one discussion and another.

Re: Javascript Date.Now() in local time

MeleKoneya — Tue, 01 Dec 2015 00:39:52 GMT

Thanks Steve the quick reply. I was not able to open the links you sent.

Re: Javascript Date.Now() in local time

TyroneBiggums — Tue, 01 Dec 2015 12:52:07 GMT

http://stackoverflow.com/questions/6525538/convert-utc-date-time-to-local-date-time-using-javascript

http://stackoverflow.com/questions/85116/how-do-i-display-a-date-time-in-the-users-locale-format-and-time-offset

Re: Javascript Date.Now() in local time

MeleKoneya — Tue, 01 Dec 2015 23:21:19 GMT

This is the code I pulled together from StackOverFlow links. It writes the date to the SDE feature class in the correct format to view local time in ArcMap.

feature.attributes.sfd_edit_date = convertUTCDateToLocalDate(new Date(Date.now()));

//added to convert UTC to local Time
function convertUTCDateToLocalDate(date) {
var newDate = new Date(date.getTime()+date.getTimezoneOffset()*60*1000);

var offset = date.getTimezoneOffset() / 60;
var hours = date.getHours();

    newDate.setHours(hours - offset);
    newDate = newDate.getTime();
    return newDate;
    };

Re: Javascript Date.Now() in local time

MeleKoneya — Tue, 05 Jan 2016 19:20:51 GMT

Changed my code slightly as shown below:

//added to convert UTC to local Time

function convertUTCDateToLocalDate(date) {

date = new Date(date);

var localOffset = date.getTimezoneOffset() * 60000;

var localTime = date.getTime();

date = localTime - localOffset;

//date = new Date(date);

return date;

};