Looking now at the rest of this thread... there were several specific dates given over the course of the years, from 1966 through 1971.
For example, I remember Vicki finding a dated document about the dismissal of servants from Collinwood in the late 1940s on which she found the name of Hanscombe, the butler (to whom she may or may not have been related).
When Laura Collins arrived in December of '66, Maggie Evans asked if she was coming in to town "for the holidays," a clear reference to X-mas.
There were specific dates for the fiery immolation of the woman in Phoenix, Arizona, and Laura's arrival in C'port.
Jumping ahead, I remember that Grandma-mamma Edith Collins' will was dated March 3, 1897 (yes, when you watch certain episodes several times over the years, you do remember these things).
When Vicki arrived in 1795, the announcement of the date of Barnabas and Josette's wedding (read from the newly-engraved invitations) sent her into a faint.
Paul Stoddard was told to expect "payment due" on a certain date in December, 1969.
I could go on, but I am afraid I am trying folks' patience as it is.
G.