This segment covers the period from 10 September 2021 - 3 December 2021(after the long eclipse season 2021 and has 140% data volume as a baseline.

For the eclipse season the payload will be off, the dates are:

• C1: 08/09/2021 12:00 - 18/09/2021 12:00
• C2: 08/09/2021 12:00 - 16/09/2021 12:00
• C34: 06/09/2021 06:00 - 14/09/2021 12:00

There is no moon eclipses during this segment.

There will be manoeuvres on C3 on 28 September 2021, 25 October 2021 and 5 November 2021, the full list of manoeuvres for this period is included here ​​http://jsocwiki.rl.ac.uk/attachment/wiki/WikiStart/manoeuvres_aug2020_nov2021.pdf.

Cluster crosses the predicted neutral sheet: C12 - 08/11/2021, C34 - 06/11/2021.

Cluster crosses the predicted magnetopause from: C1 - 14/11/2021, C2 - 16/11/2021, C34 - 23/11/2021.

The main science targets are the neutral sheet, the Cluster conjunctions with MMS and/or THEMIS in the plasma sheet, skimming magnetopause, Cluster conjunctions with MMS and/or THEMIS at the magnetopause and inside the magnetosheath, Cluster-Solar Orbiter conjunctions at the magnetopause for BM1 and the hiss origin, equatorial chorus, dayside outer zone chorus, norhern AKR and plasma sheet boundary layer for BM2.