What was that big boom around New Year’s? It depends which noise you’re wondering about on which day: a jet flyover, transformer explosion or … something else.

In a look ahead at a week of Cambridge and Somerville events, the new year starts with poetry and comedy, brings singing, smut and serious literature, art and poetry, and ends with drag and a dive into Italian culture – music of its baroque period and a visit from La Befana for Epiphany Eve.

City of Cambridge offices, libraries and senior centers close Monday for the New Year’s holiday. Post offices close as well, and there’s more to be aware of.

In a look ahead at a week of Cambridge and Somerville events, there’s a bunch of New Year’s Eve parties to attend as well as quieter family gatherings, poetry strolls, comedy and traditional music and dance to revel in.

These looks at what’s on screens in the coming week include The Brattle’s “Everything Everywhere All at Once” double features, bringing in films that inspired the surreal hit film, followed by a New Year’s Day tradition: a marathon of classic Marx brothers from the 1930s.

In a look ahead at a week of Cambridge and Somerville events, there’s plenty of celebrations of the solstice – the shortest day of the year and coming of winter – as well as less nature-focused fun with the Sweetback Sisters and Army of Broken Toys. There’s even something to do when there’s nothing to do: A poetry stroll.

These looks at what’s on screens in the coming week include “Holiday Adjacent” fare such as “In Bruges” and “Spencer,” as well as an eight-day celebration around “Everything Everywhere All at Once” with related films such as “Swiss Army Man” and “The Goonies.”

In a look ahead at a week of Cambridge and Somerville events there’s the “Solstice: Reflections on Winter Light” light show at Mount Auburn Cemetery and Midwinter Revels “Solstice Celebration,” as well as one-to-one opera performances, readings and poetry, comedy and weird cinema, history and a protest art performance in Harvard Square.

These looks at what’s on screens in the coming week include repertory fare including “It’s a Wonderful Life” and latter-day holiday classics: “Die Hard”; “Batman Returns”; and even the “Black Christmas” slasher flick. We also review Noah Baumbach’s brave attempt at bringing the novel “White Noise” to celluloid.

In a look ahead at a week of Cambridge and Somerville events, there’s a book on the “Birth of Rock ’n’ Roll” as well as more music to hear, a Poetry Brothel as well as more basic readings, nature walks and museums, labor history and “Lovefool” and holiday happenings from shopping strolls to drag shows.