Swift 5 seulement le numéro de jour à partir de la date
let dateString = "2018-12-24 18:00:00 UTC"
let formatter = DateFormatter()
formatter.dateFormat = "yyyy-MM-dd HH:mm:ss 'UTC'"
guard let date = formatter.date(from: dateString) else {
return
}
formatter.dateFormat = "yyyy"
let year = formatter.string(from: date)
formatter.dateFormat = "MM"
let month = formatter.string(from: date)
formatter.dateFormat = "dd"
let day = formatter.string(from: date)
print(year, month, day) // 2018 12 24
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