Every olympiad.
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From your first SOF olympiad to representing India at IMO — discover every competition available to you.
51+Olympiads Listed
12Organiser Bodies
1–12Classes
2026Updated for
HBCSE / IAPT
3 ListedNSEANational
National Standard Examination in Astronomy (NSEA)
IAPT / HBCSE TIFR
Class 10–12 (DOB Jul 1 2006 – Jun 30 2011)
Reg: Aug–Sep
₹200
INAONational
Indian National Astronomy Olympiad (INAO)
HBCSE TIFR
NSEA qualifiers only
Reg: Auto–Auto
Free
IOAAInternational
International Olympiad on Astronomy and Astrophysics (IOAA)
IOAA / HBCSE India team
Top 4 from OCSC Astronomy — represent India
Reg: N/A–N/A
Free