Surprisingly, the dates and ways of the celebration of Father's Day are not the same everywhere.
Father's Day is celebrated to thank fathers and express gratitude (感激) for their love. In Canada, it is celebrated on the third Sunday in June. People wear roses to express thanks and love for their fathers. This is also a time for a family reunion (团聚), because children often stay away from their family and this is a good time for them to get together with their fathers and other loved ones. But in Australia, it is celebrated on the first Sunday in September. The day is celebrated only in families. A rich breakfast for families is a good way to celebrate Father's Day. In Thailand, Father's Day falls on December 5 every year. All the people have a one-day holiday. You can see many people are in yellow and the streets are decorated in yellow because Father's Day is also the King's birthday.
Some clubs, schools and cultural societies in the United Kingdom and Ireland, Australia, South Africa organize Father's Day parties to provide people an opportunity to celebrate the day to show the importance of father's role in the family and the society.