It ( be) sunday yesterday

It was Sunday yesterday. 一 Вчера было воскресенье. Was it Sunday yesterday? 一 Вчера было воскресенье? Was it Sunday or Monday yesterday? 一 Вчера было воскресенье или понедельник? What day was it yesterday? 一 Какой вчера был день? When was it Sunday? 一 Когда было воскресенье? It was Sunday yesterday, wasn't it? 一 Вчера было воскресенье, не так ли?