Instance Property インスタンスプロパティ

timeIntervalSinceReferenceDate

The interval between the date object and 00:00:00 UTC on 1 January 2001. この日付オブジェクトと1 January 2001での00:00:00 UTCの間の隔たり。

Declaration 宣言 

var timeIntervalSinceReferenceDate: TimeInterval { get }

Discussion 議論

This property’s value is negative if the date object is earlier than the system’s absolute reference date (00:00:00 UTC on 1 January 2001). このプロパティの値は、日付オブジェクトがシステムの絶対基準日（00:00:00 UTC 1 January 2001）より早いならば負です。

See Also 参照

Getting Time Intervals 時間の隔たりを得る

func timeIntervalSince(Date) -> TimeInterval
Returns the interval between the receiver and another given date. レシーバと別の与えられた日付との間の隔たりを返します。
var timeIntervalSinceNow: TimeInterval
The interval between the date object and the current date and time. この日付オブジェクトと現在の日付と時刻の間の隔たり。
var timeIntervalSince1970: TimeInterval
The interval between the date object and 00:00:00 UTC on 1 January 1970. この日付オブジェクトと1 January 1970での00:00:00 UTCの間の隔たり。
class var timeIntervalSinceReferenceDate: TimeInterval
The interval between 00:00:00 UTC on 1 January 2001 and the current date and time. 00:00:00 UTC 1 January 2001と現在の日付と時刻との間の隔たり。
var NSTimeIntervalSince1970: Double
The number of seconds from 1 January 1970 to the reference date, 1 January 2001. 1 January 1970から基準日、1 January 2001までの秒数。