Implement _Responsum ad dubia de calendario liturgico exarando pro anno 2022_

[tukusejssirs]

There is at least one issue with calculation of the celebration date of sollemnities of the Nativity of St John the Baptist and of the Sacred Heart of Jesus, when they occur on the same day (like in 2022).

• on 24 June, we should celebrate Sacred Heart of Jesus and the Nativity of St John the Baptist on 23 June;
• where St John the Baptist is a patron of nation or diocese or town/city or religious community, the dates should be revered: on 23 June → Sacred Heart of Jesus and 24 June → the Nativity of St John the Baptist.

However, in Australia and New Zealand, they celebrate the Nativity of St John the Baptist on 25 June (at least in this year); sourced from Universalis Android app release log on Google Play:

To conform to the printed Ordos in Australasia, we now show St John the Baptist as being celebrated on 25 June in Australia and New Zealand this year (as opposed to 23 June in the rest of the world).

@igneus thinks the following (src):

The very same solemnity occurrence will take place in 2033 and 2044, later 2057 and 2068 with Sts. Peter and Paul.

It seems that the ad hoc solution took care to leave unharmed the memorial of Immaculate Heart of Mary. If that assumption is correct, we can expect that the same solution (in case of occurrence of Sacred Heart with another solemnity transfer that solemnity to the day before) will be repeated also for the future cases, or even formally defined as a new calendar rule.

Links:

• Responsum ad dubia de calendario liturgico exarando pro anno 2022;
• related: June 23-25, 2022 (Sacred Heart & Nativity of St. John the Baptist) igneus/calendarium-romanum#80.

[tukusejssirs]

@emagnier, could you please take care of this issue?