All the other holy days of the seven weeks of Easter observances that the traditional churches still follow were made up during the fourth century AD. Some independent evangelical churches, like Richmond Park Church, choose not to stringently follow traditions that were made up by the fourth century church, but which are not spelled out in the Bible.

richmondparkchurch.org.uk an evangelical pentecostal church in Boscombe, Bournemouth, Dorset, UK.