Date to dateTimeUTC in Dynamics 365 FO

Date _Currentdate;

utcDateTime _UtcStartPeriod;

utcDateTime _UtcEndPeriod;

;

_currentdate=today();

_UtcCurrentPeriod =  DateTimeUtil::newDateTime(_currentdate,0);

_UtcEndPeriod = DateTimeUtil::newDateTime(_UtcEndPeriod,86400);