Today according to the Ordo is in England and Wales "Family Fast Day" and the the Memoria of the Holy Angels. There is no liturgical commemoration of the fast day so I wore white and forgot to mention the Family Fast Day.
I suspect most people will forget and be surprised on Sunday by the collection for Cor Unum or whatever charitable institution their parish supports. I suspect most of my people don't really keep Fridays as a day of fasting and penance, as a day to honour the Passion and Death of Christ.
In England and Wales the rule for Fridays is to abstain from meat or to say the Rosary or to do the Stations of the Cross or to visit the sick or needy.
Last Friday in the Extraordinary Form I celebrated an Ember Day, I fasted a little more than normally on a Friday. At Mass I wore purple, and following the Missal, I added the prayers asking the intercession of Our Lady and the saints and read the prophecy in place of the Epistle.
When the Holy See removed Ember Days and Rogation Days from the liturgical calendar of the Ordinary Form they gave Bishop's Conferences the authority to designate certain days as fast days. The absence of any liturgical commemoration tends to reduce fasting from a profoundly spiritual thing to a means simply of saving money for a worthy cause. That is not how the scriptures see fasting.
Perhaps one of the influences that the traditional liturgy should have on the new is the restoration of fasts to both the liturgy and the ordinary life of the faithful.
Fasting and mortification should be part of Christian life.