How to get the current time as datetime
DatetimeSwiftDatetime Problem Overview
Just started with the playground. I'm trying to create a simple app.
I've created a date object like this:
var date = NSDate()
How can I get the current hour? In other languages I can do something like this:
var hour = date.hour
But I can't find any properties/methods like that. I've found a method, dateWithCalendarFormat. Should I use that? If so, HOW?
Datetime Solutions
Solution 1 - Datetime
Update for Swift 3:
let date = Date()
let calendar = Calendar.current
let hour = calendar.component(.hour, from: date)
let minutes = calendar.component(.minute, from: date)
I do this:
let date = NSDate()
let calendar = NSCalendar.currentCalendar()
let components = calendar.components(.CalendarUnitHour | .CalendarUnitMinute, fromDate: date)
let hour = components.hour
let minutes = components.minute
See the same question in objective-c https://stackoverflow.com/questions/2927028/how-do-i-get-hour-and-minutes-from-nsdate
Compared to Nate’s answer, you’ll get numbers with this one, not strings… pick your choice!
Solution 2 - Datetime
Tested with Swift 4
Getting the Current Date and Time
You can get the current date and time as simply as this:
let currentDateTime = Date()
However, Date is a 64-bit floating point number measuring the number of seconds since the reference date of January 1, 2001 at 00:00:00 UTC. I can see that number for the current datetime by using
Date().timeIntervalSinceReferenceDate
At the time of this writing, it returned 497626515.185066, probably not exactly what you are looking for. Keep reading.
Creating Another Date and Time
Method 1
If you know the number of seconds before or after the reference date, you can use that.
let someOtherDateTime = Date(timeIntervalSinceReferenceDate: -123456789.0) // Feb 2, 1997, 10:26 AM
Method 2
Of course, it would be easier to use things like years, months, days and hours (rather than relative seconds) to make a Date. For this you can use DateComponents to specify the components and then Calendar to create the date. The Calendar gives the Date context. Otherwise, how would it know what time zone or calendar to express it in?
// Specify date components
var dateComponents = DateComponents()
dateComponents.year = 1980
dateComponents.month = 7
dateComponents.day = 11
dateComponents.timeZone = TimeZone(abbreviation: "JST") // Japan Standard Time
dateComponents.hour = 8
dateComponents.minute = 34
// Create date from components
let userCalendar = Calendar.current // user calendar
let someDateTime = userCalendar.date(from: dateComponents)
Other time zone abbreviations can be found here. If you leave that blank, then the default is to use the user's time zone.
Method 3
The most succinct way (but not necessarily the best) could be to use DateFormatter.
let formatter = DateFormatter()
formatter.dateFormat = "yyyy/MM/dd HH:mm"
let someDateTime = formatter.date(from: "2016/10/08 22:31")
The Unicode technical standards show other formats that DateFormatter supports.
Displaying the Date and Time
Method 1
If you want to just display certain components of the date or time you can use CalendarUnit to specify the components that you want to extract from Date.
// get the current date and time
let currentDateTime = Date()
// get the user's calendar
let userCalendar = Calendar.current
// choose which date and time components are needed
let requestedComponents: Set<Calendar.Component> = [
.year,
.month,
.day,
.hour,
.minute,
.second
]
// get the components
let dateTimeComponents = userCalendar.dateComponents(requestedComponents, from: currentDateTime)
// now the components are available
dateTimeComponents.year // 2016
dateTimeComponents.month // 10
dateTimeComponents.day // 8
dateTimeComponents.hour // 22
dateTimeComponents.minute // 42
dateTimeComponents.second // 17
See this answer also.
Method 2
Method 1 gave you the components, but it would be a lot of work to format those numbers for every style, language, and region. And you don't need to. This has already been done for you with the DateFormatter class.
// get the current date and time
let currentDateTime = Date()
// initialize the date formatter and set the style
let formatter = DateFormatter()
formatter.timeStyle = .medium
formatter.dateStyle = .long
// get the date time String from the date object
formatter.string(from: currentDateTime) // October 8, 2016 at 10:48:53 PM
Here is a continuation of the above code that shows more formatting options:
// "10/8/16, 10:52 PM"
formatter.timeStyle = .short
formatter.dateStyle = .short
formatter.string(from: currentDateTime)
// "Oct 8, 2016, 10:52:30 PM"
formatter.timeStyle = .medium
formatter.dateStyle = .medium
formatter.string(from: currentDateTime)
// "October 8, 2016 at 10:52:30 PM GMT+8"
formatter.timeStyle = .long
formatter.dateStyle = .long
formatter.string(from: currentDateTime)
// "October 8, 2016"
formatter.timeStyle = .none
formatter.dateStyle = .long
formatter.string(from: currentDateTime)
// "10:52:30 PM"
formatter.timeStyle = .medium
formatter.dateStyle = .none
formatter.string(from: currentDateTime)
Keep in mind, though, that this is for English with the region set to the US. For other languages and regions the formatting will look different.
Further study
Solution 3 - Datetime
You could also use NSDateFormatter's convenience method, e.g.,
func printTimestamp() {
let timestamp = NSDateFormatter.localizedStringFromDate(NSDate(), dateStyle: .MediumStyle, timeStyle: .ShortStyle)
print(timestamp)
}
printTimestamp() // Prints "Sep 9, 2014, 4:30 AM"
Solution 4 - Datetime
Swift makes it really easy to create and use extensions. I create a sharedCode.swift file and put enums, extensions, and other fun stuff in it. I created a NSDate extension to add some typical functionality which is laborious and ugly to type over and over again:
extension NSDate
{
func hour() -> Int
{
//Get Hour
let calendar = NSCalendar.currentCalendar()
let components = calendar.components(.Hour, fromDate: self)
let hour = components.hour
//Return Hour
return hour
}
func minute() -> Int
{
//Get Minute
let calendar = NSCalendar.currentCalendar()
let components = calendar.components(.Minute, fromDate: self)
let minute = components.minute
//Return Minute
return minute
}
func toShortTimeString() -> String
{
//Get Short Time String
let formatter = NSDateFormatter()
formatter.timeStyle = .ShortStyle
let timeString = formatter.stringFromDate(self)
//Return Short Time String
return timeString
}
}
using this extension you can now do something like:
//Get Current Date
let currentDate = NSDate()
//Test Extensions in Log
NSLog("(Current Hour = \(currentDate.hour())) (Current Minute = \(currentDate.minute())) (Current Short Time String = \(currentDate.toShortTimeString()))")
Which for 11:51 AM would write out: > (Current Hour = 11) (Current Minute = 51) (Current Short Time String = 11:51 AM)
Solution 5 - Datetime
You can use in swift 4 or 5 like bellow
let date = Date()
let df = DateFormatter()
df.dateFormat = "yyyy-MM-dd HH:mm:ss"
let dateString = df.string(from: date)
Ouput will be like bellow
2019-12-20 09:40:08
Solution 6 - Datetime
Swift 4
let dateFormatter : DateFormatter = DateFormatter()
// dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
dateFormatter.dateFormat = "yyyy-MMM-dd HH:mm:ss"
let date = Date()
let dateString = dateFormatter.string(from: date)
let interval = date.timeIntervalSince1970
OUTPUT
2018-May-01 10:41:31
Solution 7 - Datetime
Swift 2 answer :
let date = NSDate()
let calendar = NSCalendar.currentCalendar()
let components = calendar.components([.Hour, .Minute], fromDate: date)
let hour = components.hour
let minutes = components.minute
Solution 8 - Datetime
Swift 3:
static func currentTime() -> String {
let date = Date()
let calendar = Calendar.current
let hour = calendar.component(.hour, from: date)
let minutes = calendar.component(.minute, from: date)
return "\(hour):\(minutes)"
}
PS - not sure what the question means exactly by getting current time (and hour) as date time, but hopefully the above should explain enough to answer the question.
Solution 9 - Datetime
With Swift 5, Foundation offers many ways to get the hour value from a Date object. According to your needs, you may choose one of the four following Playground code snippets.
#1. Using Calendar dateComponents(_:from:) method
Calendar has a method called dateComponents(_:from:). dateComponents(_:from:) has the following declaration:
func dateComponents(_ components: Set<Calendar.Component>, from date: Date) -> DateComponents
> Returns all the date components of a date, using the calendar time zone.
Usage:
import Foundation
let date = Date()
let dateComponents = Calendar.current.dateComponents([.hour], from: date)
let hour = dateComponents.hour
print(String(describing: hour)) // may print: Optional(13)
#2. Using Calendar component(_:from:) method
Calendar has a method called component(_:from:). component(_:from:) has the following declaration:
> Returns the value for one component of a date.
func component(_ component: Calendar.Component, from date: Date) -> Int
Usage:
import Foundation
let date = Date()
let hour = Calendar.current.component(.hour, from: date)
print(hour) // may print: 13
#3. Using DateFormatter dateFormat property
DateFormatter has a property called dateFormat. dateFormat has the following declaration:
var dateFormat: String! { get set }
> The date format string used by the receiver.
Usage:
import Foundation
let date = Date()
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "HH"
let hour = dateFormatter.string(from: date)
print(hour) // may print: 13
#4. Using Dateformatter setLocalizedDateFormatFromTemplate(_:) method
Dateformatter has a method called setLocalizedDateFormatFromTemplate(_:). setLocalizedDateFormatFromTemplate(_:) has the following declaration:
func setLocalizedDateFormatFromTemplate(_ dateFormatTemplate: String)
> Sets the date format from a template using the specified locale for the receiver.
Usage:
import Foundation
let date = Date()
let dateFormatter = DateFormatter()
dateFormatter.setLocalizedDateFormatFromTemplate("HH")
let hour = dateFormatter.string(from: date)
print(hour) // may print: 13
Solution 10 - Datetime
if you just need the hour of the day
let calendar = NSCalendar.currentCalendar()
var hour = calendar.component(.Hour,fromDate: NSDate())
Solution 11 - Datetime
Using Date Formatter -Swift 3.0
//Date
let dateFormatter = DateFormatter()
dateFormatter.dateStyle = .medium
let dateString = "Current date is: \(dateFormatter.string(from: Date() as Date))"
labelfordate.text = String(dateString)
//Time
let timeFormatter = DateFormatter()
timeFormatter.timeStyle = .medium
let timeString = "Current time is: \(timeFormatter.string(from: Date() as Date))"
labelfortime.text = String(timeString)
###Update Date and Time Every Seconds
override func viewDidLoad() {
super.viewDidLoad()
timer = Timer.scheduledTimer(timeInterval: 1, target: self, selector: #selector(DateAndTime.action), userInfo: nil, repeats: true)
}
func action()
{
//Date
let dateFormatter = DateFormatter()
dateFormatter.dateStyle = .medium
let dateString = "Current date is: \(dateFormatter.string(from: Date() as Date))"
labelfordate.text = String(dateString)
//Time
let timeFormatter = DateFormatter()
timeFormatter.timeStyle = .medium
let timeString = "Current time is: \(timeFormatter.string(from: Date() as Date))"
labelfortime.text = String(timeString)
}
Note: DateAndTime in the Timer code is the Class name.
Solution 12 - Datetime
In Swift 3,
let date = Date()
let calendar = Calendar.current()
let hour = calendar.component(.hour, from: date)
Solution 13 - Datetime
One line Swift 5.2
let date = String(DateFormatter.localizedString(from: Date(), dateStyle: .medium, timeStyle: .short))
Solution 14 - Datetime
I know there are a lot of answers but I think that mine may be more convenient to many
extension String {
init(epoch: Double) {
let date = Date(timeIntervalSince1970: epoch)
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "dd/MM/yyyy HH:mm:ssZZZ"
self = dateFormatter.string(from: date)
}
}
Solution 15 - Datetime
You can try this
func getTime() -> (hour:Int, min:Int, sec:Int) {
let currentDateTime = NSDate()
let calendar = NSCalendar.currentCalendar()
let components = calendar.components([.Hour,.Minute,.Second], fromDate: currentDateTime)
let hour = components.hour
let min = components.minute
let sec = components.second
return (hour,min,sec)
}
Now call that method and receive the date with hour,min and second
let currentTime = self.getTime()
print("Hour: \(currentTime.hour) Min: \(currentTime.min) Sec: \(currentTime.sec))")
Solution 16 - Datetime
Xcode 8.2.1 • Swift 3.0.2
extension Date {
var hour: Int { return Calendar.autoupdatingCurrent.component(.hour, from: self) }
}
let date = Date() // "Mar 16, 2017, 3:43 PM"
let hour = date.hour // 15
Solution 17 - Datetime
Expanding upon noiiv's epically concise solution, here is the even more concise Swift 3/4 implementation:
Swift 3/4
let components = Calendar.current.dateComponents([.hour, .minute], from: Date())
let (hour, minute) = (components.hour, components.minute)
Also, expanding upon Leo Dabus's extension we can have:
extension Date {
func components(_ components: Set<Calendar.Component>) -> DateComponents {
return Calendar.current.dateComponents(components, from: self)
}
func component(_ component: Calendar.Component) -> Int {
return Calendar.current.component(component, from: self)
}
var era: Int { return component(.era) }
var year: Int { return component(.year) }
var month: Int { return component(.month) }
var day: Int { return component(.day) }
var hour: Int { return component(.hour) }
var minute: Int { return component(.minute) }
var second: Int { return component(.second) }
var weekday: Int { return component(.weekday) }
var weekdayOrdinal: Int { return component(.weekdayOrdinal) }
var quarter: Int { return component(.quarter) }
var weekOfMonth: Int { return component(.weekOfMonth) }
var weekOfYear: Int { return component(.weekOfYear) }
var yearForWeekOfYear: Int { return component(.yearForWeekOfYear) }
var nanosecond: Int { return component(.nanosecond) }
var calendar: Calendar? { return components([.calendar]).calendar }
var timeZone: TimeZone? { return components([.timeZone]).timeZone }
}
And use it like so:
let date = Date()
let (hour, minute) = (date.hour, date.minute)
Solution 18 - Datetime
for only date in specific format
let dateFormatter1 = NSDateFormatter()
dateFormatter1.dateStyle = .MediumStyle
dateFormatter1.timeStyle = .NoStyle
dateFormatter1.dateFormat = "dd-MM-yyyy"
let date = dateFormatter1.stringFromDate(NSDate())
Solution 19 - Datetime
Swift 5
func printTimestamp() {
let timestamp = DateFormatter.localizedString(from: NSDate() as Date, dateStyle: .medium, timeStyle: .short)
print(timestamp)
}
and Call function printTimestamp()
Solution 20 - Datetime
You can use Swift4 or Swift 5 bellow like:
let date = Date()
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd"
let current_date = dateFormatter.string(from: date)
print("current_date-->",current_date)
output like:
2020-03-02
Solution 21 - Datetime
You can create an extension on Date, that way you can easily call it in other files. Here is an example of a date extension that uses a computed property.
It will print it out: "Today, 4:55 PM"
extension Date {
var formatter: DateFormatter? {
let formatter = DateFormatter()
formatter.dateStyle = .short
formatter.timeStyle = .short
formatter.doesRelativeDateFormatting = true
return formatter
}
}
Solution 22 - Datetime
You can get from Dateformatter
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "dd/MM/yyyy"
let dateString = dateFormatter.string(from:Date())
print(dateString)
Solution 23 - Datetime
Here is the SWIFT extension to get your current device location time (GMT).
func getGMTTimeDate() -> Date {
var comp: DateComponents = Calendar.current.dateComponents([.year, .month, .day, .hour, .minute], from: self)
comp.calendar = Calendar.current
comp.timeZone = TimeZone(abbreviation: "GMT")!
return Calendar.current.date(from: comp)!
}
Get now time:-
Date().getGMTTimeDate()
Solution 24 - Datetime
Incase you need to format the answer in a particular way, you can easily use this method, the default = "dd-MM-yyyy".
extension Date {
func today(format : String = "dd-MM-yyyy") -> String{
let date = Date()
let formatter = DateFormatter()
formatter.dateFormat = format
return formatter.string(from: date)
}
}
Getting today's date can now be done using
Date().today() or Date().today("dd/MM/yyyy")
Solution 25 - Datetime
SWIFT 4:
extension Date
{
func hour() -> Int
{
//Get Hour
let calendar = Calendar.current
let components = calendar.component(.hour, from: self)
let hour = components
//Return Hour
return hour
}
func minute() -> Int
{
//Get Minute
let calendar = Calendar.current
let components = calendar.component(.minute, from: self)
let minute = components
//Return Minute
return minute
}
}
Solution 26 - Datetime
func getCurrentDate() -> Date {
let date = Date()
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd"
let dateInString = dateFormatter.string(from: date)
let dateinDate = dateFormatter.date(from: dateInString)
return dateinDate!
}
Solution 27 - Datetime
Works with Swift 5 (Xcode 10 & Xcode 11) (from France UTC)
func getCurrentDateTime() {
let now = Date()
let formatter = DateFormatter()
formatter.locale = Locale(identifier: "fr_FR")
formatter.dateFormat = "EEEE dd MMMM YYYY HH:mm"
myLabel.text = formatter.string(from: now)
myLabel.font = UIFont(name: "HelveticaNeue-Light", size: 12)
myLabel.textColor = UIColor.black
}
If you want to display only the date, set formatter.dateFormat
formatter.dateFormat = "EEEE dd MMMM YYYY"
To display only hours, change formatter.dateFormat to
formatter.dateFormat = "HH:mm"
Don't forget to add getCurrentDateTime() on viewDidLoad.
Solution 28 - Datetime
Below code is latest swift version (5):
func getTimestamp()-> String {
let timestamp = DateFormatter.localizedString(from: Date(), dateStyle: .medium, timeStyle: .short)
return "\(timestamp)"
}