OIC - Convert DateTime from one timezone to another with Daylight saving in OIC

Usecase: 

Here, we will demonstrate how to convert one timezone to another considering the daylight saving time.

Here, we will see UTC to Australia timezone change.

Implementation steps:

1. Create 2 javascript functions
1. 1st one will determine whether the datetime under DST or not. Response will be in True or False.
2. 2nd one will add UTC +11.00  or UTC+10.00 depends on the daylight saving.
2. Import it to OIC library
3. Create an integration and feed a datetime
4. Feed the input date time to javascript and get the the converted timezone from the integration.

Javascript code used: (save .js extension)

function isDaylightSavingsInEffect(dateTimeInput) {

    var dateTime = new Date(dateTimeInput);

    var month = dateTime.getMonth();

    month = month + 1;

    var year = dateTime.getFullYear();

    var day = dateTime.getDate();

    var hours = dateTime.getHours();

    var firstDateofSunday = 0;

    var flag = false;

   // get first Sunday of any Month

    var firstSunday = new Date(year, month - 1, 1);

    var dayOfWeek = firstSunday.getDay();

    if (dayOfWeek == 0) {

        firstDateofSunday = 1;

    } else {

        firstDateofSunday = 7 - (dayOfWeek - 1);

    }

    // return for DST Eligibility

    if (month < 4 || month > 10 || (month == 10 && day >= firstDateofSunday) || (month == 4 && day <= firstDateofSunday)) {

        flag = true;

    } else {

        flag = false;

    }

    return flag;

}

// returns date and time YYYY-MM-DD HH:MM:SS 

function sc_convertUTC2AEST (utcDate) {
var inDate = new Date(utcDate);
var offset = 0;
var response = '';
if (!isNaN(inDate)) {
offset = isDaylightSavingsInEffect(inDate) ? 11 : 10; // Using your function to decide offset
inDate.setHours(inDate.getHours() + offset);
string ='';
response= string.concat(inDate.getUTCFullYear(), '-', (('0' + (inDate.getUTCMonth() + 1)).slice(-2)),'-', ('0' + inDate.getUTCDate()).slice(-2),' ', ('0' +
inDate.getUTCHours()).slice(-2), ('0' + inDate.getUTCMinutes()).slice(-2), ('0' + inDate.getUTCSeconds()).slice(-2))
}
return response;
}

Detailed screenshots:

Js Codes:

Testing:

Import .js file to libraries and save.

Create a integration and take js action and choose the javascript 2nd function >> feed the input UTC date time.

Map the js action response.

Note: Instead of using Javascript action, we can also call the function from xslt mapper.