[Aloysius]

Not even the Pope can dispense with any of the Ten Commandments.

So would that make the 5:30 PM Saturday anticipated Mass illicit?

[Loyalist]

So would that make the 5:30 PM Saturday anticipated Mass illicit?

It is illicit if it purports to fulfil the Sunday obligation. One may as well claim to fulfil the Sunday obligation on Wednesday.

[St.Chuck]

So would that make the 5:30 PM Saturday anticipated Mass illicit?

It's my understanding that the Sabbath would begin at sunset. The prayer of the church, the divine office, will always begin with vespers, so an anticipated mass on Saturday evening is consistent with Catholic tradition, which should hearten you.