DIFFERENCES BETWEEN THE SABBATH & FESTIVALS
There are no major differences between the rules governing the acts that may be carried out by or for a patient on the Sabbath or on the Festivals. Nor is there a basic difference between the first and second days of the Festivals (in the Diaspora), except for the fact that that which is forbidden to be done by or for a patient on the first day of the Festival, is permitted on the second day provided the act only involves a Rabbinical prohibition. However, there is no such difference between the first and second days of Rosh Hashanah. Therefore, whenever I have used the word "Sabbath", my intention is, unless otherwise stated, to include the Festivals.
 Shemirat Shabbat Kehilchata 31:27-28.