---
title: "dateTimeSeparator(_:)"
framework: foundation
role: symbol
role_heading: Instance Method
path: "foundation/datecomponents/iso8601formatstyle/datetimeseparator(_:)"
---

# dateTimeSeparator(_:)

## Declaration

```swift
func dateTimeSeparator(_ separator: Date.ISO8601FormatStyle.DateTimeSeparator) -> DateComponents.ISO8601FormatStyle
```