• Initially at 89.5°W, is at 137.2°W since 12 February 2019.

• Initially stored in stand-by position at 89.5°W.
• Moved to 135°W in December 2011 to replace GOES-11 as GOES-W.
• SXI and XRS are backup instruments of GOES-14 for Space weather service 

• Initially stored in back-up position at 105°W
• From 23 Sept to 19 Oct 2012, moved at towards 75°W to back-up GOES-13, stopped at 89.5°W after GOES-13 service recovery
• From 19 Dec 2012 to 6 Feb 2013, moved back towards 105°W at 0.34 degrees/day.
• Activated as back-up for GOES-13 for a couple of weeks starting from 23 May 2013, keeping the 105°W position.
• Currently in nominal configuration as "hot" stand-by.  SXI and XRS are primary instruments for Space weather service.

• After a long-lasting commissioning phase at 89.5°W, the satellite has been moved to 75.2°W, reached in mid-December 2017.  It has been declared operational on 18 December 2017.

• Commissioning completed on 16 December 2015.
• In storage until end 2017, then moved to the operational position.

• Primary operational satellite at 0° as of 11 April 2007.  Replaced by Meteosat-10 as of 21 January 2013.  RSS service taken over from Meteosat-8 on 9 April 2013.
• Prime GERB service.
• HRIT not activated. High Rate Information is disseminated in near-real-time by EUMETCast.

• Initially placed at 3.4°, it has replaced Meteosat-9 at 0° as of 21 January 2013, then moved to 9.5°E for rapid scanning.

• Re-location of Meteosat-8 over the Indian Ocean.
• The launch date should be understood as the date of the satellite reaching the position of 41.5°E.
• Since then, parallel operations with Meteosat-7 IODC have taken place, until a final transition to Meteosat-8 IODC on 1st February 2017.

• Replacing FY-2E at 105°E as of 3 June 2015.
• Re-located at 99.5°E on 16 April 2018.

• Re-located from the initial position (99.5°E) to the current operational position (105°E nominal) on 16 April 2018

• Used for regional scanning.

• Replaced MTSAT-2 as operational satellite on 7 July 2015.

• Himawari-9 will replace Himawari-8 as primary in 2022.

• Longitude (137°W or 75°W) to be confirmed in due time.

• Longitude (137°W or 75°W) to be confirmed in due time.

• GEO position TBD between 14.5°W and 166°E.
• Launch scheduled for December 2019.

• Actual position and launch date TBD.

• GEO position TBD between 76°E, 14.5°W and 166°E

• The quoted geostationary position is a guess.  The actual is TBD.

• The quoted geostationary position is a guess.  The actual is TBD.
• The quoted launch date is a guess.  The actual is TBD.

• The quoted geostationary position is a guess.  The actual is TBD.
• The quoted launch date is a guess.  The actual is TBD.

• The quoted geostationary position is a guess.  The actual is TBD.

• The quoted geostationary position is a guess.  The actual is TBD.
• The quoted launch date is a guess.  The actual is TBD.

• The quoted geostationary position is a guess.  The actual is TBD.
• The quoted launch date is a guess.  The actual is TBD.

• GEO position TBD between 14.5°W and 166°E

• The ECT, initially 14:00 asc, is drifting at a rate of 0.77 min/month.

• Satellite reassigned as primary operational following the loss of DMSP-19 in Feb 2016.

• LAC failed soon after launch.
• The ECT, initially 07:30 desc, is drifting at a rate of 1.05 min/month.

• The ECT, initially 13:30 asc, is drifting at a rate of 3.52 min/month.

• LRPT failed soon after launch, one AHRPT transmitter failed 6 months later.
• Global data disseminated by EUMETCast became the primary dissemination system.
• As of Sept 2008 the redundant AHRPT unit is utilised for a partial coverage, enabling the reception and retransmission of NRT data by EARS.
• Operating as back-up / secondary in parallel with Metop-B since 24 April 2013.
• For lifetime extension active orbit control has been suspended

• Replacing MetOp-A for primary operations on 24 April 2013.
• Dissemination via EUMETCast.

• Operational service suspended on 31 May 2015 for anomaly investigation. Recovered from 30 July onwards.

• The ECT of 14:45 asc refers to 14 July 2017.

• F14 tape recorder failed Aug 2008, thus no global data.

• The orbit is drifting from the original 10:30 desc ECT.

• Battery degraded.  Instruments turned off during orbit night.  Decommissioning foreseen for January 2020,

• Orbit lowered from the original 705 km to 689 km to follow CloudSat, whose orbit was lowerd on 23 February 2018.

• Battery degraded since April 2011.
• Orbit lowered from the original 705 km to 689 km on 23 February 2018.

• In July 2017 the orbital height was lowered to 1309.5 km in order to implement a 368 d cycle (Long Repeat Orbit, LRO) instead of 9.9 d.

• Position exchanged with that of SWARM-C because of the failure of ASM on that satellite.

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• Sentinel-3A operations were trasferred from ESA to EUMETSAT on 13 July 2016.

• One of the two solar panels did not deploy after launch.  Operations not affected for the moment.

• Commissioning phase completed on 16 September 2016

• Extended commissioning phase expected (late 2019).

• Launch scheduled for October 2019.

• Launch scheduled for the 2nd half of 2019.

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• SOHO went out of control on 25 June 1998, and was recovered on 1 February 1999.

• Initially placed in a double-lunar-swingby orbit, the satellite was moved to the L1 position in November 1996.

• Contact with one of the two satellites, STEREO-B, was lost on 1st October 2014.

• L1 Lagrange libration point reached on 8 June 2015.
• Transition from NASA to NOAA occurred on 28 October 2015.

• Launch scheduled for 6 February 2020.