This weekend carries two different weights, and the calendar is honest about both. Friday is September 11, twenty five years on, and nearly every town on the Island will mark it. Then Saturday morning arrives and the fall festival season opens all at once: a village carnival in East Northport, a garlic farm in Riverhead, a street fair in Rocky Point and a craft fair in Babylon that regularly draws more than 30,000 people. Here is what is worth your drive, and why.

Friday evening: the 25th anniversary, marked with 500 drones over Commack

Ceremonies run across both counties Friday, from village greens to firehouse steps, and the right one to attend is usually the one closest to home. The most ambitious observance is in Commack, where the community's remembrance at Commack High School on Scholar Lane begins at 6:30 p.m. and includes a tribute told by 500 illuminated drones over the field. Riverhead holds its ceremony at the World Trade Center memorial park at Edwards and Riley avenues in Calverton. If you have never been to Calverton's memorial, this is the year to go.

East Northport Festival, Friday through Sunday

The chamber of commerce carnival at John J. Walsh Memorial Park, 190 Larkfield Road, is the classic of the weekend: rides, games, live music, food trucks and a beer garden, with admission free. It opens Friday from 6 to 11 p.m., runs Saturday from 11 a.m. to 11 p.m. and closes Sunday from 11 a.m. to 6 p.m., with a craft bazaar both weekend afternoons. This is the festival that fills a village for three days, and Saturday night, with the rides lit and the bands on, is the version worth planning around.

The garlic festival moves to Riverhead, Saturday and Sunday

Long Island's stinkiest festival has a new home this year. Waterdrinker's garlic festival runs Saturday and Sunday from 10 a.m. to 5 p.m. at the farm's North Fork location, 4560 Sound Avenue in Riverhead, and the $20 admission covers the field activities: the corn maze, the pumpkin patch, a garlic scavenger hunt and hayrides. The vendor market leans hard into the theme, the roasted corn comes garlic buttered, and yes, there is garlic ice cream, which you should try precisely once. Between this and the sunflower fields, it is the most complete fall farm day on the Island this weekend.

Hicks Nurseries opens year 51 of its fall festival, Saturday

The oldest fall tradition in Westbury starts Saturday: Hicks Nurseries opens its 51st annual fall festival, free to walk, with the giant pumpkins arriving and a new resident skeleton family posed among the displays. It runs daily into November, so the play here is simple: go early in the season while the photo spots are fresh and the weekend crowds have not yet peaked.

Rocky Point closes Broadway for its fall street fair, Saturday

Downtown Rocky Point turns its main drag into a walkable fair Saturday from 11 a.m. to 4 p.m., with Broadway given over to local makers, small businesses, live music and a kids lineup that includes face painting, laser tag and axe throwing. It is free, it is compact, and it pairs naturally with a North Shore afternoon: you can do Rocky Point at noon and still make East Northport by dinner.

Babylon's Argyle Park fair, Sunday

The Babylon Beautification Society's annual fair at Argyle Park, 244 West Main Street, is the biggest single day of the weekend: more than 325 craft vendors around the park and gazebo from 8 a.m. to 5 p.m., food and drink booths opening at 10, and a children's section across the canal at Bayman Park. Crowds in past years have topped 35,000, so treat parking like a plan rather than an afterthought. If it rains, the whole fair slides to September 20.

Also on this weekend

Wyandanch Plaza becomes a free open-air cinema Saturday for the Q31 Film Festival. The San Gennaro Feast of the Hamptons brings its zeppole and sausage rings to Good Ground Road in Hampton Bays Saturday and Sunday. The Port Washington Italian Festival runs through Sunday at North Hempstead Beach Park, and Captree State Park hosts its dockside family festival Saturday along the boat basin in Babylon.

The through line this weekend is that summer did not so much end as change clothes. The carnivals moved from the beach towns to the villages, the corn got a maze cut into it, and the Island's best free entertainment is now within a short drive of almost everyone reading this. Pick two, bring cash for the food trucks, and go.