Holy Communion Twice in One Day?

Yes, you may receive twice in one day, although the Church provides guidelines that need to be followed. The Code of Canon Law provides that a person may receive Holy Communion a second time, provided he does so during a celebration of the Eucharist in which he participates (canon 917). The stipulation that one receive the second Communion at a Mass “in which he participates” doesn’t apply in the case of those in danger of death (canon 921).