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, 2026

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 14:

M Mar 30 (089)
T Mar 31 (090)
W Apr 01 (091)  Artemis II launch window begins
T Apr 02 (092)  C/2026 MAPS campaign ends
F Apr 03 (093)
S Apr 04 (094)
S Apr 05 (095)

Notes:

* Solar Orbiter Remote Sensing Window 27, Mar 29-Apr 3
* Comet C/2026 A1 (MAPS) observing campaign:
    - HI-1 20 min. cadence, no HI-1 beacon images, Mar 29 - Apr 2
* Artemis II launch window, Apr 1-10

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Scheduled activities for Week 15:

M Apr 06 (096)
T Apr 07 (097)
W Apr 08 (098)
T Apr 09 (099)
F Apr 10 (100) Artemis II launch window ends
S Apr 11 (101)
S Apr 12 (102)

Notes:

* Artemis II launch window, Apr 1-10

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Scheduled activities for Week 16:

M Apr 13 (103)
T Apr 14 (104)
W Apr 15 (105)
T Apr 16 (106)
F Apr 17 (107)
S Apr 18 (108)
S Apr 19 (109)

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Scheduled activities for Week 17:

M Apr 20 (110)
T Apr 21 (111)
W Apr 22 (112)
T Apr 23 (113)
F Apr 24 (114)
S Apr 25 (115)
S Apr 26 (116)

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Scheduled activities for Week 18:

M Apr 27 (117)
T Apr 28 (118)
W Apr 29 (119)
T Apr 30 (120)
F May 01 (121)
S May 02 (122)
S May 03 (123)

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Scheduled activities for Week 19:

M May 04 (124)
T May 05 (125)
W May 06 (126)  Ahead: Momentum dump, 13:30 UT
T May 07 (127)
F May 08 (128)
S May 09 (129)
S May 10 (130)

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Upcoming events:

2026:

* 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

2027:

* Feb 25-Mar 4          Parker Solar Probe perihelion pass
* Feb 8                 Solar Orbiter Perihelion
* May 24-31             Parker Solar Probe perihelion pass
* July 7                Solar Orbiter Perihelion
* Aug 21-28             Parer Solar Probe perihelion pass
* Nov 17-24             Parker Solar Probe perihelion pass
* Dec 4                 Solar Orbiter Perihelion

2028:

* Feb 14-21             Parker Solar Probe perihelion pass
* Mar 18                Solar Orbiter Venus flyby
* May 8                 Solar Orbiter Perihelion
* May 12-19             Parker Solar Probe perihelion pass
* Aug 8-15              Parker Solar Probe perihelion pass
* Oct 5                 Solar Orbiter Perihelion
* Nov 5-12              Parker Solar Probe perihelion pass

2029:

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

2030:

* Sep 3			Solar Orbiter Venus flyby

Plans last modified Tuesday, 31-Mar-2026 18:47:44 UTC

Last Revised: Tuesday, 06-Jan-2026 21:38:40 UTC
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