utcDateTime and Timezone Offsets in AX 2012

1. When I attempt to get system date and time.

utcDateTime                processedDateTime;

processedDateTime = DateTimeUtil::getSystemDateTime();

2. When I attempt to get Timezone from date and time. So I tried to apply a Timezone offset to this date and time. My timezone is GMT +05:30. The Timezone enum for this is Timezone::GMTPLUS0530CHENNAI_KOLKATA_MUMBAI

utcDateTime                processedDateTime;

processedDateTime = DateTimeUtil::applyTimeZoneOffset(DateTimeUtil::getSystemDateTime()
                                   , Timezone::GMTPLUS0530CHENNAI_KOLKATA_MUMBAI);