Adam Clarke on Matthew 27:62

The next day - This was the seventh, or Saturday, and might be what we should term the evening of the sixth, or Friday, because the Jews always ended their day when the sun set, and then began the next.

That followed the day of the preparation - That is, of the Sabbath. The victuals, etc., which were to be used on the Sabbath by the Jews, were always prepared the preceding evening before the sun set. It is of this preparation that the evangelist speaks here; and it is the same which is mentioned by Mark, Mar 15:42; by Luke, Luk 23:54; and by John, Joh 19:31. But there was another preparation which happened in the same day: viz. The preparation of the passover; this began about twelve o'clock, and continued till four, the time in which they ate the paschal lamb. See Joh 19:14.