The topic of time in the play has already been dealt with extensively on eNotes. Here is a comprehensive link for you: http://www.enotes.com/romeo-and-juliet/search?q=time+passes
There are none that I know of other then when they talk about Juliet's marriage to Paris happening on Thursday. However in the books we use there is a paragraph before each scene that discusses the scene and says the day of the week. The first one for act 1 scene 1 says "Verona, Sunday morning"