| Phase | Region | Timeline Files from S. Petrinec | Additional Notes | |
| Year 4 | Ext 4a – Sept 4, 2018 | 25RE Dusk Flank | ||
| Ext 4b | 25RE Dayside Apogee raise to 28RE | |||
| Ext 4c | 28RE Dawn Flank | |||
| Ext 4d | 1st 28RE Nightside | |||
Year 3
| Ext 3a – Sept 1, 2017 | 25RE Dusk Flank | MMS_3a_SROIs_792-817_dusk_timelines.pdf | 1 SROI |
Ext 3b – Nov 14, 2017 | 25RE Dayside | 3 SROI, 1st use of SW modes | ||
| Ext 3c – Mar 13, 2018 | 25RE Dawn Flank | |||
Ext 3d – May 25, 2018 | 2nd 25RE Nightside | MMS_3d_SROIs_886_930_mtail_timelines.pdf | ||
| Year 2 | Phase 2a – January 31, 2017 | Apogee raise, Dawn | ||
| Phase 2b – May 1, 2017 | 1st 25RE Nightside Completion of Prime Mission | MMS_2b_SROIs_748-793_mtail_timelines.pdf | 1 SROI | |
| Year 1 | Phase 1a – September 1, 2015 | 1st 12RE Dayside | ||
| Phase 1x – March 8, 2016 | 12RE Dawn, Nightside, Dusk | |||
| Phase 1b – Sept 12, 2016 | 2nd 12RE Dayside | |||
 MMS_2015Orbits_GSE.jpg | Commissioning – March 15, 2015 | Dusk Flank |
