STEREO Coordinated Observations Calendar

Archived plans: 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025

Below, please find the current plans for STEREO operations. All dates and times are UTC unless otherwise specified. More detailed plans can be found in the weekly schedules (Ahead, Behind). Other planning resources are also provided. This page is also available as plain text.

Contact information for coordinated observation requests can be found on the Solar JOP guidelines page.

These pages gives information about possible STEREO support for Parker Solar Probe and Solar Orbiter. Here is also Information about STEREO-A close approach to Earth, August 2023

Links to planning and scheduling pages for other missions: SOHO, Hinode, NSO, VLA, EISCAT, Max Millenium, ISTP Planning.

Information about reduced science operations during the solar conjunction period between August 2014 and November 2015 can be found here.

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Scheduled activities for Week 47:

M Nov 17 (321)
T Nov 18 (322) Ahead: Momentum dump, 18:30 UT, Comet Lemon campaign ends
W Nov 19 (323)
T Nov 20 (324)
F Nov 21 (325)
S Nov 22 (326)
S Nov 23 (327)

Notes:

* Comet Lemon observing campaign: HI-1 20 min. cadence, no HI-1 or COR-1 beacon, Nov 12-18

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Scheduled activities for Week 48:

M Nov 24 (328)
T Nov 25 (329)
W Nov 26 (330)
T Nov 27 (331)
F Nov 28 (332)
S Nov 29 (333)
S Nov 30 (334)

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Scheduled activities for Week 49:

M Dec 01 (335)
T Dec 02 (336)
W Dec 03 (337) Ahead: SECCHI stepped calibration roll, 22:30
T Dec 04 (338)
F Dec 05 (339)
S Dec 06 (340)
S Dec 07 (341)

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Scheduled activities for Week 50:

M Dec 08 (342)  
T Dec 09 (343)  Start of PSP perihelion pass
		DSN ECC test track, 18:15-19:30
W Dec 10 (344)  
T Dec 11 (345)  
F Dec 12 (346)  
S Dec 13 (347)  
S Dec 14 (348)  

Notes:

* Parker Solar Probe perihelion pass, Dec 9-17

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Scheduled activities for Week 51:

M Dec 15 (349)  
T Dec 16 (350)  
W Dec 17 (351)  End of PSP perihelion pass
T Dec 18 (352)  
F Dec 19 (353)  
S Dec 20 (354)  
S Dec 21 (355)  

Notes:

* Parker Solar Probe perihelion pass, Dec 9-17

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Scheduled activities for Week 52:

M Dec 22 (356)  
T Dec 23 (357)  
W Dec 24 (358)  
T Dec 25 (359)  Christmas
F Dec 26 (360)  
S Dec 27 (361)  
S Dec 28 (362)  

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Upcoming events:

2026:

* Feb 12-27             Solar Orbiter Remote Sensing Window 25
* Feb 28-Mar 10         Solar Orbiter Remote Sensing Window 26
* Mar 8-16              Parker Solar Probe perihelion pass
* Mar 29-Apr 3          Solar Orbiter Remote Sensing Window 27
* Jun 4-12              Parker Solar Probe perihelion pass
* Aug 4-14              Solar Orbiter Remote Sensing Window 28
* Aug 15-25             Solar Orbiter Remote Sensing Window 29
* Sep 1-9               Parker Solar Probe perihelion pass
* Sep 11-21             Solar Orbiter Remote Sensing Window 30
* Nov 28-Dec 6          Parker Solar Probe perihelion pass
* Dec 24                Solar Orbiter Venus flyby

2028:

* Mar 18		Solar Orbiter Venus flyby

2029:

* Jun 10		Solar Orbiter Venus flyby
* Jun 30		Ahead: Mercury transit

2030:

* Sep 3			Solar Orbiter Venus flyby

Plans last modified Tuesday, 18-Nov-2025 19:28:07 UTC

Last Revised: Tuesday, 16-Sep-2025 17:56:56 UTC
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