Change header row within table?

[RJP_Home]

I have a long table in my PDF output. The table has a header row, set to repeat on each page. The table is divided into sections signifying different dates for the table content by a row that spans all seven columns of the table. There are eight of these rows throughout the table, each with a different date as the content. Is there a way to get the row holding the date to automatically appear at the top of each page until a new date is reached? Obviously, adding a second header row won't work as only one date would be carried through the whole table. Splitting the table at the start of each new date section is the only other method (besides manually putting the row at the top of each page break) I can think of and that would just look clunky.
Thanks.

[RJP_Home]

I came up with a semi-solution by applying mc-heading-level: 2; to the row contents and then having the Level2: variable in the header. Not the exact solution I'm hoping for, but at least the reader will know which date they are looking at.