seven o'clock
`` You are sure you will not be more than an hour , mother ? '' `` Oh , certain . '' `` And I suppose in any case I may shut up the shop at seven o'clock , may n't I ? '' `` Shut the shop at seven o'clock ! '' said Mrs. Hopkins . `` You forget that this is Wednesday . We always keep the shop , except the post-office part , open until past nine on Wednesdays ; such a lot of people come in for odds and ends on this special night .