The aforementioned announcement of the 2022 public holidays in Rwanda is based on the "Presidential Order N° 54/01 of 24/02/2017 Determining Official Public Holidays" (2017-02-26), as published in the in the Official Gazette 2017-03-13, n°11, pp. 23-28 (2017-03-14), as was the case in recent years (2021-02-21, 2020-01-08, 2019-01-04 and 2018-01-02).
Previously (2017-01-03, 2015-11-01, 2015-01-26, 2014-03-26, 2013-01-07 and 2012-01-11), the annual list of public holidays in Rwanda had been governed by the "Arrêté Presidentiel N°06/01 Du 16/02/2011 Determinant Les Jours Feries Officiels" (2011-03-07) and later by the "Presidential Order N°42/03 Of 30/06/2015 Determining Official Holidays", as published in the in the Journal officiel, 2015-06-30, Numéro spécial bis, pp. 11-16 (2015-07-01 and 2015-05-18).
Note that the list of 2022 public holidays, as released by the Government of Rwanda, contains a few errors in the dates of the 2022 dates of Easter and Muslim public holidays. We can probably expect a corrigendum in the next few weeks.
Links and References
Below are links to the news stories referred to in the above "Rwanda 2022 Public Holidays Announced" news story, as well as links to subsequents news stories which refer to the present news story.