Significant events that happened in 2019
January
- 1 - The March of the Oni set officially releases around the world.
- 1 - The Legacy sets officially release in America.
- 4 - The March of the Oni Trailer releases
- 19 - The Darkness Comes airs in New Zealand.
- 26 - Into the Breach airs in New Zealand.
February
- 2 - The Fall airs in New Zealand.
- 4 - The Darkness Comes airs in Australia
- 9 - Endings airs in New Zealand.
April
- 6 - The Darkness Comes airs in Canada.
- 13 - Into the Breach airs in Canada.
- 19 - March of the Oni airs in the US as a 2 hour film.
- 20 - The Fall airs in Canada.
- 27 - Endings airs in Canada.
May
- 26 - The Season 11 teaser is released.
June
- 1 - Season 11 Sets release in most countries.
- 1 - Ninjago Summer 2019 Accessory Set releases worldwide.
- 1 - Wasted True Potential air and Questing for Quests in Ukraine.
- 2 - A Rocky Start and The Belly of the Beast air in Ukranie.
- 8 - Boobytraps and How to Survive Them and The News Never Sleeps air in Ukraine.
- 9 - Ninja vs Lava and Snaketastrophy air in Ukraine.
- 14 - The Fire Chapter trailer is released on The LegoLife app.
- 22 -Wasted True Potential and Questing for Quests air in the USA.
- 29 - A Rocky Start and The Belly of the Beast air in the USA.
July
- 1 - 70672 Cole's Dirt Bike releases in America and Canada.
- 6 - Boobytraps and How to Survive Them and The News Never Sleeps air in the USA.
- 13 - Ninja vs Lava and Snaketastrophy air in the USA.
- 20 - Powerless and Ancient History air in the USA.
- 26 - Never Trust a Human and Under Siege air in the USA.
August
- 1 - The rest of the Season 11 Sets release in the US, Canada and other countries.