On this day 25 years ago, Harry Potter arrived on Platform 9¾ at King's Cross Station in London for the very first time. Today not only marks the beginning of The Boy Who Lived's magical journey, but it's also known as Hogwarts Day, the first day of school for those lucky enough to attend Hogwarts School of Witchcraft and Wizardry.

Witches and wizards from all over the U.K. flocked to King's Cross station (packed with Muggles, as per usual) this morning, trunks in hand, to board the Hogwarts Express. According to J.K. Rowling's beloved Harry Potter series, the train leaves Platform 9¾ on the first of September promptly at 11 a.m. — without fail! — and arrives at Hogsmeade Station just in time for the welcoming feast at the castle.

King's Cross confirmed the departure of the Hogwarts Express this morning, posting details of the magical journey on its actual departure boards.

Meanwhile, Rowling celebrated the holiday by tweeting congratulations to Harry Potter's youngest son, Albus Severus Potter, for his first day of school at Hogwarts. But fans were quick to correct the best-selling author; in fact, Albus's first day is next year. Rowling deleted the original tweet and issued a swift apology.

Honestly, we can't blame her for mixing up the dates. Who doesn't have Harry Potter and the Cursed Child on the brain? Even Oliver Phelps (George Weasley) was excited to celebrate Hogwarts Day — and he's way past the legal wizarding age to board the train.

Don't be too upset if you missed the train to Hogwarts this year. You could always steal your father's flying car and drive to Scotland through the clouds, like Harry and Ron in Harry Potter and the Chamber of Secrets. Or, you know, you could wait until October and take the actual train to the Harry Potter Festival and Quidditch Tournament in Chestnut Hill, Pennsylvania.