A query regarding Citizenship

[gc]

Can someone tell me when I should be applying for citizenship

Date of entry 28th march 2004 on WP
Switched to HSMP on 26th August 2006
Acquired ILR on 1st April 2009.

Do i have to wait till April 2010 or do I qualify under HSMP JR?

Thanks in advance,

GC

[f2k]

When did you APPLY for HSMP