ok, I looked back at previous MyFico and TC reports, and in each case, the exact statement balance (as of the closing date) was reported in any report pulled the following month.
I think the poster (sorry, I can't navigate back to see your name) got the date of the 16th because that's their statement date. If that followed for me, I would not have the exact match of the statement balance going back to February (which is all I've checked so far).
For what it's worth, and because we all have slightly different statement dates, the rep I spoke with last week said that the statement balance was reported at the end of the month. However, in May, the TC report date was 5/29, which was the Tuesday after Memorial Day.
I've also noted that the report date advertised in the little TC popup box is not necessarily the date they actually change the balance. TU is so slow!!