National Youth Day in Thailand
National Youth Day in Thailand is held on September 20. This event in the second decade of the month September is annual. 
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Every year on September 20, Thailand celebrates National Youth Day, which also marks the birthdays of Kings Chulalongkorn and Ananda Mahidol. Thailand celebrates Youth Day on this date because of the many births in the month of September.
Working age population remains stable, while senior population has been continuously on the rise, projecting to reach 14.7 per cent of total population by 2016 (Population prospects, 2000 - 2033). This situation presents a good rationale to focus on child and youth quality development, on building skills and knowledge of the next generation preparing for effective replacement of declining number of current workforce and a national asset.
National Youth Day in Argentina on September 16
Plurinational Youth Day in Bolivia on September 21
Youth Day in Peru on September 23
National Youth Day in Nauru on September 25
Youth Pledge Day or Hari Sumpah Pemuda in Indonesia on October 28
National Youth Day in East Timor on November 12
National Youth Day in Albania on December 8