I started this thread after being told my submission to Ask an Apologist would not be answered. But I now rejoice, for in the true spirit of Sunday, it has been resurrected.:angel1:
While she didn’t address the 2nd, 3rd, or 4th aspect of Sunday in my question, Jan Wakelin provides a near-definitive answer (
link) to the first issue:
Sunday mass obligation. Short answer: anytime until midnight Sunday night is ok, and you may attend a Sunday vigil mass anytime after 4 pm Saturday in the US, or after noon Saturday in the UK (Canadians can probably split the difference
).
**Lenten penance
**Her sources on the first issue were canon law commentaries. Since my question focusses on nitpicky technicalities, the law (and its interpretation) seems like the place to go for the answers. I assume the Lenten penance is a pious custom rather than a regulated activity under canon law, so I doubt there is a definitive answer to this - each person must interpret and act on this custom as they see fit.
Multiple receptions of Eucharist
The wording of Canon 1248 cited by Jan Wakelin, “on the feast day itself or in the evening of the preceding day,” implies that in most cases, days are reckoned by the calendar day rather than the traditional Jewish custom. This is probably true of reception of the Eutharist, as
mjdonnelly said.
Refraining from servile work
This one I could still see going either way. I like the approach of
BrianDay, especially because the rest from work was so integral to the Jewish tradition that we are attempting to follow in recognizing the vigil as part of Sunday. However, it seems to me this is probably addressed by canon law, so the simplicity of the calendar day may be the actual rule. Anyone got a copy handy?