Question

I am working on a project where i need to SHOW the visitor of the website a message in the contacts area like:

Contact no: [phone] [You can call us now]

The message is highlighted in the above line, now my question is, how to compare the user’s time zone with the working hours of the company’s office.

P.S. – Suppose the company is in INDIA, and its working hours are 9.00am to 5.00pm.

Any suggestions?

Answer 1

Use javascript to determine the users timezone offset:

http://www.w3schools.com/jsref/jsref_gettimezoneoffset.asp

var d = new Date()
var gmtHours = -d.getTimezoneOffset()/60;
document.write("The local time zone is: GMT " + gmtHours);

Then calculate e.g. the current time in INDIA (GMT + 5:30 if i’m not wrong) and show “you can call us now” if the resulting time is within the working hours.

var diff = gmtHours - 5.5; // -> difference between users timezone and india in hours
var indiaDate = new Date();
indiaDate.setTime(d.getTime() - (diff * 60 * 60 * 1000));
document.write("<br />Current time in India: " + indiaDate.toString());

See the working demo at: http://jsfiddle.net/roberkules/RLsw9/