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# Calendar.MatchingPolicy.previousTimePreservingSmallerComponents

If there is no matching time before the end of the next instance of the next higher component to the highest specified component in the `DateComponents` argument, the algorithm will return the previous existing value of the missing component and preserves the lower components’ values.

```
case previousTimePreservingSmallerComponents
```

## Discussion

For example, during a daylight saving transition there may be no 2:37am. The result would then be 1:37am, if that does exist.

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