давом кардан: to last
Winter lasts from 21st of December to 20th of March.
Ин ҷангҳо зиёда аз панҷоҳ сол давом карданд.
These wars lasted more than fifty years.
As you can see in the first sentence, names of months in Tajik aren’t usually capitalized. Also, the word фасл (season) is usually used in conjunction with the name of the season.
давом: continuation (noun)
давом додан: to continue
Learn more verbs by clicking on the verb tag.