Question: is feast of trumpets a sabbath?
Answer: Yom Teru'ah (Feast of Trumpets) on the first day of the seventh month; the second is Yom Kippur (Day of Atonement); and two during the feast of Sukkoth (Feast of Tabernacles) on the first and last day. ... The Gospel of John says of the day beginning following Christ's death, "that sabbath day was a high day" (19:31–42).