Some chappy has taken to advocating abstinence from meat and the associated practice of penance during Friday of Bright Week, that is, on Friday during the Paschal octave. He writes:
"Therefore, if one follows the discipline of 1962, then the corresponding practice on Easter Friday remains a day of abstinence. If one follows the post-Vatican II discipline (which admittedly is the law, just as it would be lawful to feast during 38 of the 40 days of Lent), then grill the steak with one's novus ordo friends."I could not think of a greater indictment of the 1962 kalendar system, or really the kalendar as it existed during the century of so preceding Pius XII, Montini, and Bugnini's great brain child, Liturgical Reform. St. Pius V's kalendar had about 180 feasts of either semi-double or double rank, including days within octaves, leaving the rest as ferial or simple days. The few double feasts could supersede Sunday's liturgy. By the time of the 1911 reforms only a few days were left of ferial ranks either because of new feasts inserted at double rank or old feasts promoted so as to curtail the length of the Offices on those days. The 1960 simplification did not clean up kalendar clutter and the lack of rhythm (the liturgical context in which the 1917 Code of Canon Law was created). Rather it simply conceded to the clutter: first class is important, second class is for Sundays and those pesky Apostles, third class is everything else, fourth class means have yourself a votive Mass. The unique ranking of a week that precludes all other celebrating is quite lost.
A cursory glance at some sources indicates no consistent outlook on fasting or abstinence from meat during octaves in the medieval church, when octaves became very important. Sarum seems to have foregone these two during the Paschal and Nativity octaves. It is possible that some octaves were given more festive treatment than others, which would only be reasonable. There would be some abstinence on Friday during the Pentecost octave because the penitential Ember days are more ancient than the week-long extension of the feast.
My Greek rite church will have neither fasting nor abstinence until the Friday after All Saints Sunday (same day as Trinity Sunday in the West).