In the 1962 Monastic Ordo, this Sunday is labelled the Second Sunday after Pentecost; in older Missals and chant books though it is labelled the Sunday after Corpus Christi, a leftover from the days when the feast still had an Octave dedicated to it. Either way, the texts set for the Sunday reflect the Eucharistic theme.
In many countries, though, the feast of Corpus Christi has been transferred to this Sunday, and so the External Solemnity of the feast may be celebrated on that day rather than the proper Thursday.
Either way, you should to make an effort to join in the hour of Eucharistic Adoration led by the Pope at 5-6pm Rome time on June 2!
Feasts this week
Sun 2 June Second Sunday after Pentecost [Sunday after Corpus Christi], Class II; SS Marcellinus
and Peter, memorial
Mon 3 June Class IV
Tues 4 June Class IV
Wed 5 June St Boniface, Class III
Thurs 6 June St Norbert, Class III
Fri 7 June Feast of the Most Sacred Heart of Jesus, Class I
Sat 8 June Saturday of Our Lady