Art: Robert Kremnizer The 3rd of Tammuz this year occurs on Shabbat [tonight and tomorrow].  Throughout Chabad this date is simply known as ''Gimmel Tammuz'' - the day of the passing of the Lubavitcher Rebbe  in 5754 [June 12 1994]. The Rebbe played a huge part in my life during his later years, and whilst I did not ever meet the Rebbe in person, I have had several dreams where he has