What are the advantages and disadvantages of having a birthday in summer?
What are the advantages and disadvantages of having a birthday in winter?
What are the advantages and disadvantages of having a birthday in spring?
What are the advantages and disadvantages of having a birthday in autumn?
The advantages are
Every day is a holiday, so you can celebrate for much longer! You are not set to go to school, so you can celebrate it in any place you want!
The disadvantages are
Your classmates might not be able to attend your birthday party, since they might be busy travelling or doing something else. Also, you won't get congratulated by your school, since you are nit attending it.