<!--
{
  "availability" : [
    "iOS: 15.0.0 -",
    "iPadOS: 15.0.0 -",
    "macCatalyst: 15.0.0 -",
    "macOS: 12.0.0 -",
    "tvOS: 15.0.0 -",
    "visionOS: 1.0.0 -",
    "watchOS: 8.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "Foundation",
  "identifier" : "/documentation/Foundation/Date/FormatStyle/Symbol/Day/julianModified(minimumLength:)",
  "metadataVersion" : "0.1.0",
  "role" : "Type Method",
  "symbol" : {
    "kind" : "Type Method",
    "modules" : [
      "Foundation"
    ],
    "preciseIdentifier" : "s:10Foundation4DateV11FormatStyleV6SymbolV3DayV14julianModified13minimumLengthAISi_tFZ"
  },
  "title" : "julianModified(minimumLength:)"
}
-->

# julianModified(minimumLength:)

Creates a custom day format style representing the modified Julian day.

```
static func julianModified(minimumLength: Int = 1) -> Date.FormatStyle.Symbol.Day
```

## Parameters

`minimumLength`

Specifies the minimum number of digits.

## Return Value

The minimum length specifies the minimum number of digits, zero-padded if necessary. For example, `002451334`.

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)