STS-134 Flight Day 12 Planned Activities

23:56 GMT (7:56 pm EDT) – Endeavour / ISS Crew Wake Up (Begins Flight Day 12)
0:31 GMT (8:31 pm EDT) – EVA #4 Preparations Resume
4:46 GMT (12:46 am EDT) – EVA #4 Begins (Fincke & Chamitoff)
4:51 GMT (12:51 am EDT) – SRMS Handoff OBSS To SSRMS
5:16 GMT (1:16 am EDT) – OBSS Installation On S1 Truss
6:16 GMT (2:16 am EDT) – P6 PDGF Retrieval
7:41 GMT (3:41 am EDT) – Removal Of OBSS EDGF / Replacement With PDGF
9:01 GMT (5:01 am EDT) – EDGF Stowage In Endeavour’s Payload Bay
9:36 GMT (5:36 am EDT) – SPDM Spare Arm EDF Bolt Removal
11:16 GMT (7:16 am EDT) – EVA #4 Ends
15:26 GMT (11:26 am EDT) – ISS Crew Sleep Begins
15:56 GMT (11:56 pm EDT) – Endeavour Crew Sleep Begins