swift get day from date code example
Example 1: get day start time in swift
extension Date {
var startOfDay : Date {
let calendar = Calendar.current
let unitFlags = Set<Calendar.Component>([.year, .month, .day])
let components = calendar.dateComponents(unitFlags, from: self)
return calendar.date(from: components)!
}
var endOfDay : Date {
var components = DateComponents()
components.day = 1
let date = Calendar.current.date(byAdding: components, to: self.startOfDay)
return (date?.addingTimeInterval(-1))!
}
}
let myDate = Date()
let startOfDate = myDate.startOfDay
let endOfDate = myDate.endOfDay
Example 2: swift get day from available string
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)
Example 3: swift 5 only the day number from 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)