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This tutorial shows how to do the following things in Swift
- Get Yesterday’s date
- Get Tomorrow’s date
- Add and subtract 1 week to the Current date
- Add and subtract 1 month to the Current date
- Add and subtract 1 year to the Current date
To add any value to the Current Date, Calendar provides the date method with the below syntax
date(byAdding:to:options:)
byAdding: tells to add .day or .month,.year and .weekOfYear
value: value can be positive or negative
to: specify current date.
How to add and subtract a day, month, week, and year from a current date
Current date returns using new Date() object.
- example to get the Current Date
Date() object returns the current date and time
import Foundation
let date = Date()
print(date)
Output:
2022-10-30 11:16:16 +0000
- example to get Yesterday’s Date
Date() object returns the current date and time
import Foundation
let date = Date()
// yesterday date
let yesterday = Calendar.current.date(byAdding: .day, value: -1, to: date)!
print(yesterday)
Output:
2022-10-30 11:16:16 +0000
- example to get Tomorrow’s Date
import Foundation
let date = Date()
// tomorrows date
let tomorrow = Calendar.current.date(byAdding: .day, value: 1, to: date)!
print(tomorrow)
Output:
2022-10-30 11:16:16 +0000
- example to add and subtract 1 week to the current Date
import Foundation
let date = Date()
// add 1 week to current date
let nextWeek = Calendar.current.date(byAdding: .weekOfYear, value: -1, to: date)!
print(nextWeek)
// substract 1 week to current date
let previousWeek = Calendar.current.date(byAdding: .weekOfYear, value: 1, to: date)!
print(previousWeek)
Output:
2022-10-30 11:29:12 +0000
2022-10-30 11:29:12 +0000
- example to add and subtract 1 month to the current Date
import Foundation
let date = Date()
// add 1 month to current date
let onemonth = Calendar.current.date(byAdding: .month, value: 1, to: date)!
print(onemonth)
// substract 1 month to current date
let previousMonth = Calendar.current.date(byAdding: .month, value: -1, to: date)!
print(previousMonth)
Output:
2022-08-03 11:29:12 +0000
2022-10-30 11:29:12 +0000
- example to add and subtract 1 year to the current Date
date function added with byAdding: .year and value 1 to get next year today date. date function added with byAdding: .year and value -1 to get previous year today date
// add 1 year to current date
let nextYear = Calendar.current.date(byAdding: .year, value: 1, to: date)!
print(nextYear)
// substract 1 year to current date
let previousYear = Calendar.current.date(byAdding: .year, value: -1, to: date)!
print(previousYear)
Output:
2023-07-03 11:31:01 +0000
2021-07-03 11:31:01 +0000
