Sentence:  Mr. Spenlow told me this day week was Dora's birthday, and he would be glad if I would come down and join a little picnic on the occasion. . . . I think I committed every possible absurdity in the way of preparation for this <WSD>blessed event</WSD>. 
Meaning of the word marked with <WSD> tags:  An occurrence or occasion which is particularly noteworthy and enjoyable.