| Mission Name | AO Call | Deadline |
| INTEGRAL | AO18 https://www.cosmos.esa.int/web/integral/ao18 | 03 April 2020 |
| XMM Newton | AO21 https://www.cosmos.esa.int/web/xmm-newton/ao21-timeline | 08 October 2021 |
| Chandra | AO22 https://cxc.cfa.harvard.edu/proposer/ | 09 October 2020 |
| Swift | AO15 https://swift.gsfc.nasa.gov/proposals/swiftgi.html | 26 September 2019 |
| NuSTAR | AO7 https://heasarc.gsfc.nasa.gov/docs/nustar/nustar_prop.html | 29 January 2021 |
| Fermi | AO14 https://fermi.gsfc.nasa.gov/ssc/proposals/ | 19 February 2021 |
| Insight-HXMT | AO4 http://hxmten.ihep.ac.cn/notice/555.jhtml | 30 April 2021 |
| Astrosat | AO11 http://astrosat-ssc.iucaa.in/?q=A11 | 30 March 2021 |
| NICER | AO3 https://heasarc.gsfc.nasa.gov/docs/nicer/proposals/nicer_prop_guide.html | 01 March 2021 |
