The British Orthodox Church observes the same liturgical calendar as the Coptic Church but is permitted to follow the Gregorian Calendar (rather than the Julian). This simply means that there is a difference of thirteen days: i.e. the British observe the Feast of the Nativity on 25 December and the Copts on 7 January .
As the facility for calculating the British Orthodox Calendar is still "down" on the BOC website, the following may be of assistance:
1 November = 6 Hatoor
26 November = 1 Kiakh