which of the seasons is celebrated by many northern cultures with festivals, often symbolizing rebirth?

Spring is the season which symbolizes renewal or rebirth which is celebrated in the north by the cultural festival.

Explanation:

Early to 14th century, spring was referred to as the Lent. It is believed that the Goddess of fertility, Persephone returned during this time. Apart from these mythological beliefs, seeds are planted during the spring and it marks blooming of many flowers as the sun stays for long and rises early. Therefore, spring is celebrated as the season for rejuvenation and rebirth or as renewal season.

I'm not entirely certain, but usually, spring symbolizes rebirth.