Megan Seel, Kate Farrell and Kaitlyn Larsson weren’t certain of the answer to the question they were responsible for.

When asked if they knew how many minutes they’ve played in the postseason without allowing a goal, nobody could provide a number.

“A lot,” Farrell said, drawing a laugh from her backline mate Seel.

The time is longer than a flight from New York to Los Angeles, binge-watching the first three Star Wars movies or a trip on the LIRR from Penn Station to Montauk . . . and back. It’s also more than Garden City will spend on its next team trip — to Cortland for a state Class A girls soccer semifinal.

The Trojans have played 460 minutes of postseason soccer without allowing a goal, culminating in a 1-0 victory over Mt. Sinai in the Long Island Class A championship Friday at St. Joseph’s College.

“It’s a big accomplishment,” Seel said. “Everyone has a part in it, even our forwards. They help us out and our defense has always been one of the biggest parts of our team.”

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And Larsson, the goalkeeper, diverts all credit to her defensive unit of Farrell, Seel, Jackie Morris and Gabriella Rodgers.

“Our defense is phenomenal,” said Larsson, who had five saves. “They stop everything so I think they’re the reason that the balls haven’t been flying into the back of the net.”

After consecutive scoreless 110-minute games leading to penalty-kick victories, Garden City was pleased to have a contribution from an unlikely source in the first half.

With the Mt. Sinai goalkeeper drawn out of the net, sophomore Gracie McManus corralled a loose ball and scored with 16:12 remaining in the first half for her well-timed first varsity goal.

“It was honestly the best feeling and I was just thinking ‘I have to do this for my teammates,’ ” McManus said. “They’ve worked so hard and I just want to do it for them.”

“That’s very impressive,” Farrell said. “I know I would be very scared if I was just called up from JV and I was playing in a [Long Island championship game].”

Garden City (12-4-2) dominated the pace throughout the first half, keeping Mt. Sinai’s Casey Schmitt — who scored five goals in the previous two games — contained. Mt. Sinai, which won the Suffolk ‘A’ title as the No. 4 seed, finished the season 12-4-2.

The Trojans advance to the state Class A semifinal at Tompkins Cortland Community College Saturday at 10 a.m.

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And if the Trojans can keep opponents off the scoreboard another 160 minutes, they might return to Long Island with their first state title since 2013.