For what it’s worth, I’ve had a similar question with regards to conferences that take place all in one day, and was told on this list just to repeat the same date in $s and $t.
Spurred on by a review of a colleague’s new authority record, I looked over documentation on the 046 $s/$t for Period of Activity for a Person. The MARC21 comments make no explicit mention that $s can be used for a single date of activity in the context of the Period of Activity element. Compare to 046 $k (“… the starting date of a range or a single date”) and $o (“Single or starting date of …”). Samples of 046 $s for single dates abound in the NAF, of course, but aside from a single 046 example in the DCM Z1, I don’t find instructions in the MARC documentation, the NACO training slides, RDA’s PSs, or DCM Z1 on applying such dates to the $s in this manner. Is this mentioned or codified elsewhere?
Mark K. Ehlert Alma: NA02
Cataloging and Metadata Primo: MT NA01
University of St. Thomas
"Experience is by industry achieved // And perfected by
the swift course of time"--Shakespeare, "Two Gentlemen of
Verona," Act I, Scene iii