high day

Therefore the Jews, because it was the Preparation Day, so that the bodies wouldn't remain on the cross on the Sabbath (for that Sabbath was a special one), asked of Pilate that their legs might be broken, and that they might be taken away.

In the first day there shall be to you a holy convocation, and in the seventh day a holy convocation; no kind of work shall be done in them, except that which every man must eat, only that may be done by you.

In the first day you shall have a holy convocation. You shall do no regular work.