Dragon Day

Ninjago Events

War of the Oni and the Dragons · Stone Wars · Takeover of the Serpentine Valley · First Serpentine War · Battle For All of Time · Prime Empire Incident · First Battle of Shintaro · Takeover of Shintaro · Battle Between Brothers · The New Generation · Revenge of the Serpentine · Attack of the Great Devourer · Resurrection of the Stone Army · The Final Battle · Nindroid Conflict · Second Serpentine War · Battle of Stiix · Return of the Time Twins · Fall of Ninjago · Rise of Ninjago · Release of Aspheera · Snaketastrophy · Monastery Siege · Resurfacing of Prime Empire · Vania's Birthday · Battle of Shintaro · Christening of Vania

Never-Realm Events

Takeover of the Never-Realm (Freezing of the Formling Village · Annihilation of the Yeti) · Battle of the Great Lake · Lloyd's Journey · Freezing of the Great Lake · Liberation of the Never-Realm

Acts of Arson

Paltryville Fire · Anwhistle Aquatics Fire · Baudelaire Fire · Quagmire Fire · Heimlich Hospital Fire · Caligari Carnival Fire · V.F.D. Headquarters Fire · Hotel Denouement Fire

Annual

Ninjago Talent · Take Back Ninjago

Birthdays

Vania's Birthday

Ceremonies

Choosing Ceremony

Competitions

Ninjaball Run · Tournament of Elements · Thunderblade · Sons of Garmadon Initiation Races · Speedway Five-Billion

Holidays

Day of the Departed · Halloween

Natural

Nibiru · Yin-Yang Eclipse

Remembrances

9/11 · Yin-Yang Promise

Rituals

Munce Rite of Ritual Combat · Yin-Yang Promise

Trials

Trials-By-Mino

Wars

American Revolution · Civil War · Siege of Castillo de San Marcos

Other

Alternate Timeline