"There was one day"

1. Mosiah 18: 25
     25 And there was ^aone day in every week that was set apart that they should ^bgather themselves together to teach the people, and to worship the Lord their God, and also, as often as it was in their power, to ^cassemble themselves together.
2. Mosiah 20: 2
     2 And it came to pass that there was one day a small number of them gathered together to sing and to dance.