Word forms: (regular plural) first sittings
( Hospitality (hotel) : Hotel equipment )
You can have the first sitting of dinner at 6:30 or the second sitting after 8:30.
There are two sittings for dinner, with the first sitting at 6:00.
They chose the first sitting time for their evening meal, so that it left the rest of the evening free.
Collins English Dictionary. Copyright © HarperCollins Publishers