[quote="Joe_5859, post:12, topic:342307"]
This is a good question to ask your priest. Yes, responses vary.
Dixieeagle is right that Canon Law nowhere stipulates that the readings must be for the particular day for which the obligation holds. And the time frame Canon Law gives (i.e. "evening of the previous day") is decidedly vague. Most places seem to interpret that as 4pm. I've seen at least one place interpret that as any time after noon (which seems to be stretching the definition, in my personal opinion).
So just ask your priest and all will be well. :)
Most places interpret 'evening' as after 4 p.m. based on Pius XII's 1953's Apostolic Constitution **Christus Dominus **which said in part:
With Reference to Evening Masses
(Constitution, Rule VI)
By the force of the Constitution the Ordinaries of places have the faculty of permitting the saying of evening Masses in their own territory, should circumstances render this necessary. (...)
- Such Masses, however, may not be said before four o'clock in the afternoon...