State House Roundup: Tale of two March 11s Katie Lannan March 11 was the first day mass vaccination site signups opened to Massachusetts teachers, the last day - before a preregistration system went live Friday - that thousands of appointments at those sites would be released all at once and swiftly snatched up in a stressful scramble, and the day President Biden said there'd be enough COVID-19 vaccine doses for all American adults by the end of May. Here in the infinite time loop that is daily life in a yearlong (so far) global pandemic, where the length of days and months can seem completely arbitrary and divorced from any traditional structure, Thursday also feels like it could have been March 11, 2020, the day President Trump restricted travel from Europe, the World Health Organization officially called it a pandemic, the NBA suspended its season and Tom Hanks and Rita Wilson announced they'd contracted the coronavirus.