All versions of the VLA OSS

The table below lists all versions of the VLA OSS available online.

Do not use previous versions for the current call for proposals. Also, previous versions may contain policies that are no longer applicable, or links that may no longer be valid. Refer to the latest OSS version for the most up-to-date information.

observing period
deadline*
 from to OSS
29 January 2025 09/10/2025 01/20/2026
 2025B

31 July 2024

 02/21/2025 08/25/2025 2025A
31 January 2024 10/18/2024 02/03/2025 2024B
2 August 2023 01/25/2024 09/16/2024 2024A
1 February 2023 10/20/2023 1/15/2024 2023B
1 August 2022 01/18/2023 10/09/2023 2023A
1 February 2022 10/6/2022 1/2/2023 2022B
2 August 2021 3/4/2022 9/26/2022 2022A
1 February 2021 9/22/2021 1/31/2022 2021B
3 August 2020 2/26/2021 8/30/2021 2021A
3 February 2020 10/30/2020 2/8/2021 2020B
1 August 2019 2/13/2020 10/5/2020 2020A
1 February 2019 11/20/2019 02/10/2020 2019B
1 August 2018 1/23/2019 10/14/2019 2019A
1 February 2018 10/4/2018 1/7/2019 2018B
1 August 2017 3/2/2018
 9/24/2018
 2018A
1 February 2017 9/13/2017  1/29/2018 2017B
1 August 2016 2/10/2017 8/28/2017 2017A
1 February 2016 9/23/2016 1/23/2017 2016B
3 August 2015 2/5/2016 8/29/2016 2016A
2 February 2015 10/13/2015 1/25/2016 2015B
1 August 2014 2/6/2015 9/21/2015 2015A
3 February 2014 9/19/2014 1/26/2015 2014B
1 August 2013 2/14/2014 9/15/2014 2014A
1 February 2013 9/6/2013 2/3/2014 2013B
1 August 2012 1/25/2013 9/3/2013 2013A
1 February 2012 9/7/2012 1/7/2013 2012B
29 November 2011 pdf/html
20 May 2010 pdf/html
14 September 2009 ps/pdf
13 January 2009 ps/pdf
9 April 2007 ps/pdf
20 October 2006 ps/pdf
20 December 2004 ps/pdf
28 August 2003 ps/pdf
13 May 2003 ps
25 November 2002 ps
26 September 2000 ps

* dates in italic/purple reflect publication dates

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