Oh, I missed a couple! BBC homepage mentions in its History section, that in 1975 the UN created International Women's Day to 'commemorate the historic struggle to improve women's lives'.
And on MSN you can click to find out more about 'American women who changed the world' as part of Women's History Month.
Local Events look more promising - Radio Northamptonshire is reporting several local sporting events for women, and (I think this is this year) Birkenhead has also held an event for local women.
I had to search to find these though.
BBC has some pics from around the world.