11:06am

11:06 is 666 minutes after midnight. This does not take in account for daylight savings.

January 27th; 6pm

27 day and 18 hours after a start date would equal 666 hours. January 27th and 6 pm is 666 hours into a new year.

October 28th (27th on a leap year)

666 days is about 1.8 years, and the calendar puts the 666th day from January first of 201X to October 28th of 201X(+1 year)