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# dateWithTimeIntervalSince1970:

Creates and returns a date object set to the given number of seconds from 00:00:00 UTC on 1 January 1970.

```
+ (instancetype) dateWithTimeIntervalSince1970:(NSTimeInterval) secs;
```

## Parameters

`secs`

The number of seconds from the reference date (00:00:00 UTC on 1 January 1970) for the new date. Use a negative argument to specify a date and time before the reference date.

## Return Value

An `NSDate` object set to `secs` seconds from the reference date.

## Discussion

This method is useful for creating `NSDate` objects from time_t values returned by BSD system functions.

## See Also

[`var timeIntervalSince1970: TimeInterval`](/documentation/Foundation/NSDate/timeIntervalSince1970)

The interval between the date object and 00:00:00 UTC on 1 January 1970.


---

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