[Remind-Fans] Multi-day events based off a calculated date?

[Tim Chase]

Howdy,

I'm trying to figure out how to specify "the first weekend of each
month" (defined as the first Saturday of the month and the Sunday
that follows it).  I can get

  REM Sat 1 MSG %"Weekend to work%"%

to give me the starting day successfully, but can't figure out how to
get the event to also show on the following day.  If I do

  REM Sat Sun 1 MSG %"Weekend to work%"%

it doesn't get both Saturday and Sunday, only showing first Saturday
OR Sunday of the month (when the 1st falls on a Sunday and it's
before the otherwise-triggering Saturday), but not both.

Any tips for expressing this conveniently?

Thanks,

-Tim