As all good Potterheads will know, today is 1 September, aka the day the young witches and wizards of Britain head from King's Cross to Hogwarts for the beginning of a new school year.
But this year is particularly special – because it's 2017, and that means it's the exact day we saw Harry return to Platform Nine and Three Quarters for the epilogue of Deathly Hallows.
Of course, J.K. Rowling tweeted a message to celebrate Albus Severus Potter's first day at Hogwarts.
Today's the day Albus Severus Potter boards the Hogwarts Express at King's Cross for the first time #19yearslater ⚡️
And she also told everyone to give Teddy Lupin and Victoire Weasley some space.
Fans are getting seriously emotional about it, tweeting their messages of thanks to Jo, and sharing their fond memories of the series using the hashtag #19YearsLater.
@jk_rowling Such a special day! 😭 Thank you for creating this wonderful, magical world, it means so much to so many… https://t.co/LsSnKRwNDZ
@jk_rowling These books literally shaped my life. You made me fall in love with reading. Thanks for bringing magic… https://t.co/yCjhCZbmO4
@jk_rowling You've created something where the magic never ends but extends generations. We can't thank you enough… https://t.co/uvg7o7pzJI
One fan called it "the beginning of the end", and I really can't deal with these feelings.
Today is the 1st September 2017 #19YearsLater it is the beginning of the end for us Potterheads. Good luck Albus Se… https://t.co/yV3rFI1PJv
And here's an early morning gut punch for you...
im crying this parallel between harry and albus,, james and lily should've been at harry's side just like harry and… https://t.co/7szS49IuKX
But at least we know one thing: All is well.
