Sansa and Arya Stark might not be close, but their portrayers, Sophie Turner and Maisie Williams, are bonded for life. The “Game of Thrones” actresses got matching tattoos last week, and Williams finally revealed the significance of the body art.

Both have “07.08.09” tattooed on them, and Williams confirmed that it’s a date (it’s the British format of Aug. 7, 2009). It’s the day she found out that she would play Arya on the HBO drama.

“She found out then as well but we didn’t know each other then so it’s quite a prominent date for both of us,” Williams told Yahoo. “It’s a day that both of our lives changed forever.”

As previously reported, the “GoT” actresses went to tattoo artist Kat Paine in Belfast, Northern Ireland. Paine confirmed on Facebook that they got matching tats, but she wouldn’t reveal what they were. “I’ll let her post it first as she wanted to be the first to show it and don’t want to tell everyone before her,” the artist wrote.

Many speculated that the numbers might be the subject of the tattoos after Williams posted a photo of her and Turner with that date in the caption. 

While Williams got inked beneath her left elbow, it isn’t clear where Turner decided to put the symbol of their friendship.

Turner and Williams have been close since they met during auditions for “Game of Thrones.” The Arya actress was 12, and the Sansa actress was 13. At 19 and 20, the two say that there aren’t many people who can understand their adolescent experience. “Our other friends don’t 100 percent get it,” Williams told the New York Times last year. “Sometimes it is nice to just be with the one person who does.”

Williams will get to show off her tattoo at the Emmy Awards on Sunday night. She is nominated for Supporting Outstanding Actress alongside her co-stars Emilia Clarke and Lena Headey.

“Game of Thrones” returns to HBO in summer 2017.

Maisie Williams Tattoo Photo Maisie Williams shows off the tattoo she got with “Game of Thrones” co-star Sophie Turner. She is pictured at the BBC America BAFTA Los Angeles TV Tea Party on Sept. 17, 2016 in West Hollywood, California. Photo: Getty Images