According to Uncle Frank November 10th.

Conversation I had with an old friend the other day;
"How was your Halloween?" He asked.
"The Dutch don't do Halloween mate."
"No Halloween? What the fuck?"
"They've got something else, it's called Sint Maarten"
"Like the Island?"
"Same name, but it's Halloween-ish kinda thing here."
"So how was that for you?"
"They do it tomorrow. Kids are roaming the Streets asking for treats by singing songs."
"Songs? What songs?"
"Songs about cows having tales and fat fathers, that kind of stuff."
"Strange things to sing about. What do they wear?"
"I hope clothes, no just kidding. They were lanters in regular clothing."
"So no monsters, nurses, vampires?"
"Nope, just lanterns."
"Cheapskates, too expensive to buy a dress?"
"No, it's just another tradition here. Singing and walking door to door."
"Tradition. Just like that old man with that nigro as some sort of slave, right?"
"No, it's not with slaves, also that other thing isn't"
"No slaves, how about that black dude then?"
"It's another holiday, it's sinterklaas, and it's no slave. Piet is a friend of al children."
"Under pressure of getting whipped, I'd be anythings friend. Strange holidays."
"It's tradition and children love it, but it's Sinterklaas, not Sint Maarten."
"Whatever. Those Dutch people, they are totally nuts, right?"
"Yes they are, but you know what? I love them to bits."