What festivals and anniversaries are there in May?

Festivals and anniversaries in May are:

1, May 1: International Labor Day (1889);

2.3 May: World Press Freedom Day;

3. May 4th: China Youth Day (1939) and May 4th Memorial Day (1919);

4. May 8th: World Red Cross Day (1948) and World Smile Day;

May 12: international nurses' day (1912);

6.5 15: National Day for Prevention of Iodine Deficiency Disorders (1994) and International Family (Consultation) Day (1994);

7.5 17: World Telecommunication Day (1969);

August and May 18: International Museum Day (1977);

9. May 20th: Breastfeeding Publicity Day (1990) and China Student Nutrition Day (1990);

10, May 2 1: International Tea Day (2020);

1 1, 22 May: International Biodiversity Day (2000);

12, May 25th: Africa Liberation Day (1963);

13, May 26th: World Challenge to Human Conditions Day (1993);

14 and may 27th: Shanghai liberation day (1949);

15 and May 30th: May 30th anniversary of the anti-imperialist movement (1925);

16 and May 3 1: World No Tobacco Day (1988).