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 preliminary dates are:

C1: 09/09/2021 21:00 - 19/09/2021 00:00
C2: 09/09/2021 21:00 - 16/09/2021 18:00
C34: 07/09/2021 19:00 - 14/09/2021 16:00

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 preliminary main science targets are the neutral sheet, the Cluster conjunctions with MMS and THEMIS in the plasma sheet, skimming magnetopause, the magnetopause, and the hiss origin. The BM1 data for the PEACE/WHISPER cross-calibration in the magnetosheath also will be collected.