North Korea is celebrating a major holiday today - Here's a guide to its other important holidays

Kim Jong Il, the son of North Korea's first leader, is believed to have been born on February 16, 1941.

He implemented the "Songun," or military-first, policy for North Korea and implemented changes that prioritized military spending over other other domestic necessities.

He died in December 17, 2011.

Source: CBS News, CNN

Kim Il Sung, the first leader of North Korea, is believed to have been born on April 15, 1912.

Fluent in Russian and rising through the Soviet Union military ranks, he was eventually nominated to lead North Korea. Kim Il Sung implemented a "juche" ideology that focused on self-reliance at the exclusion of any foreign influence.

He died on July 8, 1994.

Source: BBC, New York Times

North Korea marks the founding of the Korean People's Army by showcasing its forces in drills and parades.

Though the national holiday is observed as a day of rest, many people are still forced to take part in formal events and rallies.

Source: NK News

North Korean citizens were believed to have once celebrated Labor Day with sporting events, picnics, and paying homage to their former leaders.

But after a sustained food crisis in the 1990s, defectors painted a different picture of the national holiday for those suffering from a large class gap.

"State factory workers spend the day cultivating their vegetable gardens or just keeping busy at home," one defector said. "But workers at individually-run trading companies attend sports games put on by their employer. They even get high-end gifts like televisions and bicycles."

Source: Daily NK

North Korea marks this national holiday as the day the armistice agreement pausing the three-year Korean War was signed.

After devastating bombing raids and a traumatic ground campaign, around 3 million Koreans — 10% of the overall population — were estimated to have been killed, injured, or missing.

"I shrink with horror that I cannot express in words — at this continuous slaughter of men in Korea," commander-in-chief of United Nations Command Gen. Douglas MacArthur said during a congressional hearing. "I have seen, I guess, as much blood and disaster as any living man, and it just curdled my stomach, the last time I was there."

Source: The Asia-Pacific Journal, CNN

Both North and South Korea celebrates its liberation from Japanese colonization. For 36 years, the Korean peninsula was under Japanese rule from 1910-1945.

Following the end of World War II and Japan's surrender, Japan signed a declaration agreeing to relinquish command of Korea.

Source: US Army

Chuseok, or Korea's Thanksgiving Day, is a major holiday in North and South Korea.

Family members gather and take part in customs, including eating traditional rice cakes, playing folk games, and paying homage to their elders.

North Korea is believed to refer to Chuseok as "Hangawi" — its former, traditional name — in an effort to emphasize its shared culture with South Korea.

Source: Unification Ministry of South Korea