Re: ENT: A Choice of Futures by C. L. Bennett Review Thread (Spoilers!
I didn't realize the significance of the date. Anyway, the characters featured in those chapters had more important things to deal with at the time.
And the crew that we saw commemorating "First Contact Day" was the crew of Voyager, mainly through Neelix's initiative, which was the sort of thing you'd expect of a morale officer. It doesn't really reveal much about the scope of First Contact Day celebrations overall.
In fact, given as how Earth has, as of April 2163, only recently emerged from being a Vulcan vassal state, it makes a certain amount of sense to speculate that maybe First Contact isn't quite as revered a historical event for Humans of the 22nd Century as it is by the 23rd or 24th.
"Every line of serious work that I have written since 1936 has been written, directly or indirectly, against totalitarianism and for democratic Socialism, as I understand it." - George Orwell, 1946