Catholic TV is planning to broadcast today's first vespers of the Solemnity of Sts. Peter and Paul, with the Holy Father presiding, at the Basilica of St. Paul Outside the Walls. The broadcast will be at 8:00 p.m. Eastern Time, 5:00 p.m. Pacific Time. There will be a re-broadcast on Monday at noon Eastern.
EWTN is planning to broadcast Monday's Solemn Mass from Rome. The live broadcast will be at 12:30 a.m. Pacific, 3:30 a.m. Eastern, 9:30 a.m. Rome. A re-broadcast is planned for Monday at 8:30 a.m. Pacific and 11:30 a.m. Eastern.
If you cannot watch those broadcast times, check out French Catholic KTO TV which usually has video on demand available for major Papal events within a day or so after the live broadcast. Full screen viewing is available.