1. Arbor Day is a holiday that is celebrated in many countries around the world, including the United States. In English, Arbor Day is pronounced as "ahr-ber day".

2. Arbor Day is traditionally observed on the last Friday in April. However, the exact date may vary depending on the country. In English, we simply refer to Arbor Day as "Arbor Day" rather than translating it into a different phrase.

3. Arbor Day is a day dedicated to planting and caring for trees. It is a time for people to come together and take action to protect and preserve our environment. Trees are essential for the health of our planet, as they provide oxygen, absorb carbon dioxide, and provide habitat for countless species of animals.

4. The origins of Arbor Day can be traced back to the 19th century in the United States. It was first celebrated in Nebraska, and has since spread to many other states and countries around the world. The founder of Arbor Day, J. Sterling Morton, believed that trees were important for both environmental and social reasons.

5. Today, Arbor Day is celebrated in various ways. Some people participate in tree-planting events, while others take time to learn about the importance of trees and how to care for them. Many schools and organizations organize educational programs and activities to raise awareness about trees and the environment.

6. In conclusion, Arbor Day is an important holiday that promotes environmental stewardship and the planting of trees. The name "Arbor Day" is used in English, and it is typically celebrated on the last Friday in April. Taking care of our planet's trees is crucial for ensuring a healthy and sustainable future for generations to come.