Which Olympiad should I register for in 2017?

If born in 2001, currently in 5th year
IrEUSO
If born in 2001, currently in TY
IrEUSO
If born in 2002, currently in 5th year
IrJSO or IrEUSO
If born in 2002, currently in TY
IrJSO  Next year will be invited to Selection Round for IrEUSO 2018-19
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