211. International Day for the Abolition of Slavery is celebrated on:

212. International Day of Disabled Persons is observed on:

213. World Soil Day is celebrated on:

214. International Volunteer Day is observed on:

215. International Civil Aviation Day is celebrated on:

216. International Anti-Corruption Day is observed on:

217. Human Rights Day is celebrated on:

218. International Mountain Day is observed on:

219. International Migrants Day is celebrated on:

220. International Human Solidarity Day is observed on:

221. Christmas Day is celebrated on:

222. Boxing Day is observed in countries like Australia, Canada, and the UK on: