41. World Tuberculosis Day is observed on:

42. The International Day of Remembrance of the Victims of Slavery and the Transatlantic Slave Trade is on:

43. World Theatre Day is celebrated on:

44. World Sleep Day is observed on:

45. Commonwealth Day (in Australia, UK, Canada, etc.) is celebrated on:

46. On which date is April Fool’s Day observed?

47. International Children’s Book Day is celebrated on:

48. World Health Day is observed every year on:

49. The Day of Remembrance of the Victims of the Genocide is marked on:

50. International Romani Day is observed on: