The NSO 2021-22 tests will be held on November 27, 28, December 11, 12, 18, and 19, 2021, by the SOF. Students interested in competing in this olympiad should make sure they don't miss any essential days. The following are the main dates for NSO 2021-22:EventsImportant DatesNSO Registration dateOngoingLast date to registerAt least 30 days before the exam dateNSO Level 1 exam date27 Nov, 2021 – 28 Nov, 2021 (Set-A)11 Dec, 2021 – 12 Dec, 2021 (Set-B)18 Dec, 2021 – 19 Dec, 2021 (Set-C)Release of NSO answer keys for sets A, B, and CJanuary 2022 (Tentative)Declaration of Level 1 ResultJanuary 2022 (Tentative)NSO Level 2 Exam DateFebruary 2022 (Tentative)Declaration of Level 2 ResultMarch 2022 (Tentative)