in winter or during winter

[Over the top]

Which of these questions correct?

Where do John and his friends go in summer?
Where do John and his friends go during summer?
Why does he wear gloves in winter?
Why does he wear gloves during winter?

[emsr2d2]

Which of these questions correct?

Where do John and his friends go in summer?
Where do John and his friends go during summer?
Why does he wear gloves in winter?
Why does he wear gloves during winter?

You can use "in" or "during", but after "during", you need to add the definite article.

Where do you go in winter?
Where do you go during the winter?