Today is not only Sunday. .but a day of observance known as "Palm Sunday" for many Christians.
What is Palm Sunday?
Palm Sunday commemorates the entrance of Jesus into Jerusalem (Matthew 21:1-9), when palm branches were placed in his path, before his arrest on Holy Thursday and his crucifixion on Good Friday. It thus marks the beginning of Holy Week, the final week of Lent. In many Christian churches, Palm Sunday is marked by the distribution of palm leaves (often tied into crosses) to the assembled worshippers. The difficulty of procuring palms for that day's ceremonies in unfavorable climates for palms led to the substitution of boughs of box, yew, willow, olive, or other native trees. The Sunday was often designated by the names of these trees, as Yew Sunday, or by the general term Branch Sunday.