Seachtain na Gaeilge
Seachtain na Gaeilge runs from March 1st to March 17th .
(That's a 17 day week :-).
I wasn't referring to the 1916 part of the comment - marking the centenary of the Easter Rising is an entirely appropriate activity (I've played a very small part in the preparations for one such event). I fully accept that people's politics will colour their perception of how/when and even if the centenary of the Easter Rising should be marked.
But St Patrick's Day isn't a political event, and in particular it shouldn't be a painted as a sectarian event
In many cases the same people will be involved in organizing both 1916 celebrations and St Patrick's Day celebrations. But a lot of the St Patrick's Day activities in the US reach beyond the narrowly defined "Irish Community", and the audience for "St Patrick's Day" and the audience for "1916 Centenary" overlap, but aren't the same, so from what I've read, 1916 centenary celebrations, where they are occurring in the US, will happen at Easter and/or on April 24th.
And while the really big events like the New York parade have always had a distinctly Nationalist slant, they have bigger battles to fight these days!
Seachtain na Gaeilge has been around for a long time, using St Patrick's Day to encourage people to use the cúpla focal, but it wasn't necessarily a formal Monday to Sunday, or March 11th to March 17th week. As the government and the Tourism board began to expand the holiday from "St Patrick's Day" to the "St Patrick's Festival", SnaG has expanded a bit too.