Good Friday, also known as Holy Friday, Great Friday, Great and Holy Friday, or Friday of the Passion of the Lord, is a solemn Christian holy day commemorating the crucifixion of Jesus and his death at Calvary (Golgotha). It is observed during Holy Week as part of the Paschal Triduum.

Easter also called Pascha (Aramaic: פַּסְחָא , paskha; Greek: πάσχα, páskha) or Resurrection Sunday, is a Christian festival and cultural holiday commemorating the resurrection of Jesus from the dead, described in the New Testament as having occurred on the third day of his burial following his crucifixion by the Romans at Calvary c. 30 AD.

Easter Monday is the second day of Eastertide and a public holiday in more than 50 predominantly Christian countries. In Western Christianity it marks the second day of the Octave of Easter; in Eastern Christianity it marks the second day of Bright Week.

Karume Day is a national holiday in Tanzania, observed on April 7th to commemorate the life and contributions of Abeid Amani Karume, the 1st President of Zanzibar.

Union Day in Tanzania is a public holiday celebrated annually on April 26th to commemorate the 1964 unification of Tanganyika and Zanzibar to form the United Republic of Tanzania. It marks the merger of the mainland (Tanganyika) and the island (Zanzibar) and is a day for national reflection and celebration of unity.