This chart shows Massachusetts State government at its worst:
What it shows is that the state has the capacity to deliver 15,000 or 17,000 doses of vaccine a day. That's not particularly impressive in a state with a population of nearly 7 million; at that rate it would take more than a year to get the whole state vaccinated, assuming there was enough vaccine available. What's even more dismaying is that on many days the doses delivered fall way below that number—and that the low-dose days map neatly onto weekends (look at January 9 and 10, for example) and holidays (look at January 1 and at the December 24 to 27 stretch). If Massachusetts were leading other states in terms of percent of population vaccinated or percent of delivered vaccine that has been administered, then it might make sense to rest on the weekends and holidays. But the Bay State hasn't exactly covered itself in glory in either of those categories.