Question:

Dustin was born on December 28th, yet his birthday always falls in the summer. How is this possible? 

Answer:

Dustin is Australian, where the three hottest summer months are December, January, and February.

Citations:

https://www.upsidedowntext.com/

https://www.riddlesandanswers.com/tag/december-riddles/

https://www.mariemontschools.org/protected/ArticleView.aspx?iid=5GY2B0&dasi=3YG0