Joshua's long day did not affect the Sabbath. If, for example, it was a Thursday when it took place, then the sun did not set for an additional 24 hours. That made that Thursday a 48 hour day (12 hours of night and 36 hours of daylight). When the sun finally did set, it was then Friday. No loss of day, no extra day.
Aside from that, Yeshua kept the same Sabbath as the Jews. If the Jews were keeping the wrong day, then Yeshua sinned. Since he never sinned, that means the Jews were keeping all holy days correctly.
Wait a minute bro, I've already been through this here on another thread and mathematics prove what we're saying.
If an hour has 60 minutes,
and a day has 24 hours,
then a day has 1440 minutes. Gen 1:14, 15
60x24= 1440
If we multiply 1440 for one day by 5 1/4 days,
1440x5 1/4=7560 minutes.
That means every year, after Joshua's longest day Jos 10:13, the starting point of day one of the year is retarded 7560 minutes from the starting point of the first day of the 360 day year.
If we divide the 7560 minutes per year by 52 weeks then each week has been retarded 145.4 minutes more than the 360 day year,
7560/52=145.4
That means each day has been retarded 20.77 minutes.
145.4/7=20.77
That means the starting point of sundown each day has been retarded 20.77 minutes from the first day of the 360 day Jewish calendar of Ex 12.2,
so, on the first day of the week, because of the retardation of 20.77 minutes, the second day of a 360 day year actually started 20.76 minutes before the end of the first day, the second day started 41.54 minutes before the third day which means the seventh day of the first week, after the longest day, actually started 124.6 minutes, approx 2 hours, before sunset on the sixth day and it has compounded every year since.
I hope that helps (and I hope my math is correct). :biggrin
My bad, edited to add Scripture.