NET
13 On the Sabbath day we went outside the city gate to the side of the river, where we thought there would be a place of prayer, and we sat down and began to speak to the women who had assembled there.
Darby
13 And on the sabbath day we went outside the gate by the river, where it was the custom for prayer to be, and we sat down and spoke to the women who had assembled.
KJV
13 And on the sabbath we went out of the city by a river side, where prayer was wont to be made; and we sat down, and spake unto the women which resorted [thither].