At sundown, Nisan 15 began, meaning that the regular weekly Sabbath (Saturday) that year coincided with the first day of the Festival of Unfermented Cakes, which was always a sabbath.
وَفِي سَنَةِ ٣٣ ب‌م ،‏ صَادَفَ أَنْ وَقَعَ ١٥ نِيسَانَ ٱلْقَمَرِيِّ فِي يَوْمِ سَبْتٍ أُسْبُوعِيٍّ .‏