# Julian Date

> Converts calendar dates to and from Julian date formats. (iPhone/iPad app by Jevon Charles.)

- Source: https://appshunter.io/ios/app/julian-date/id1124597796 (this page in markdown: same URL + `.md`)
- Developer: [Jevon Charles](https://appshunter.io/developer/1124597795)
- Category: Productivity, Utilities
- Price: Free with in-app purchases
- Rating: 4.81/5 from 2,680 App Store ratings · 43 written reviews indexed
- Age rating: 4+
- Requires: iOS 11.1 · 11 MB
- Languages: English
- Released: 2016-06-17
- Data updated: 2026-09-02
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/julian-date/id1124597796/reviews.md

## What is Julian Date?

In 5 Digit mode select a Date and receive back the 5 Digit Julian Date, i.e. June 29th, 2017, would be 17180. (17) being the year 2017 and (180) being the 180th day in 2017.  Purchase the Full Julian Date mode and June 29th, 2017 12:17:54 PM would be 2457934.01243.  You also are able to get the Calendar Date from the Julian Date.

## Key features

- 5 Digit Julian Date conversion
- Full Julian Date conversion
- Calendar Date to Julian Date
- Julian Date to Calendar Date
- Includes time in full conversion

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Full Julian Date | $1.99 | one-time |


## What do users think of Julian Date?

Overall sentiment: positive

**Pros**

- 🚀 Best Julian Date App
- 👍 Great
- 👍 Love this APP
- 👍 Military
- 👍 wonderful
- 👍 Great
- 👍 Nice
- 👍 Aviation Taught Me Julian
- 👍 Simple but reliable
- 👍 Simple an accurate
- 👍 Works great
- 👍 Review
- 👍 Exactly what you need to be effective.
- 👍 Does
- 👍 Great Julian Date app!!
- 👍 Julian Date App
- 👍 It's simple and it works.
- 👍 Love this app
- 👍 Julian app is great for Oracle's JD Edwards EnterpriseOne ERP files
- 👍 Works great in govt application
- 👍 Perfect for Julian Date
- 👍 Works Perfectly As Described
- 👍 IMDS users, get this app!
- 👍 Runs as advertised
- 👍 Nice, comes in handy
- 👍 5 Stars
- 👍 Best tool in my check list pouch
- 👍 Number one
- 👍 Great app
- 👍 Awesome

**Cons**

- 🤔 Could be improved
- 🤔 Good but...
- 🤔 Good app
- 🤔 Need to make it so you can use on  i-watch
- 🤔 Just an idea
- 🤔 Trying to sneakily get money
- 🤔 They charge you
- 🤔 Not working correctly now.

**Commonly reported bugs**

- The year 2000 is incorrect. It is NOT a leap year.
- Entering 08204 and getting a January 24, 2008 date.

**Most requested features**

- Apple Watch?
- Add days to the Julian calendar to determine actual dates
- Make it compatible for my watch

## Recent user reviews (10 of 43)

All indexed reviews: https://appshunter.io/ios/app/julian-date/id1124597796/reviews.md

### 5/5 — Best Julian Date App

*2025-11-22, version 2.0.2*

I have been using this app for years it has made my work so easy i don’t have to look at the calendars.

Not sure why the app was removed from the app store but good to see its back again.

### 5/5 — Great

*2023-07-16, version 2.0.2*

Sometimes I need this. I love that it is available!

### 5/5 — Love this APP

*2023-06-06, version 2.0.2*

I use this APP all the time at work.  It comes in handy.

### 5/5 — Military

*2022-05-05, version 2.0.2*

Used Julian date in the Air Force for 34 years. All aircraft maintenance records were recorded by Julian dates and still are as far as I know.

### 3/5 — Could be improved

*2021-09-25, version 2.0.2*

1.  When open, it should keep time with the clock.
2.  If not #1, then provide a one-touch update
3. Improve contrast and readability or offer options.

### 4/5 — Good but...

*2021-08-29, version 2.0.2*

What would make this a 5 star app is to make it compatible for my watch

### 5/5 — wonderful

*2021-06-05, version 2.0.2*

way easy

### 5/5 — Great

*2021-05-15, version 2.0.2*

I love this app, comes in handy on the daily. As a QA I use it to verify date codes at work with our manufacturing product.

### 5/5 — Peter

*2021-04-19, version 2.0.2*

Nice

### 5/5 — Aviation Taught Me Julian

*2021-03-11, version 2.0.2*

After 30 years being amongst Aviation enthusiasts, and how technology advances continue to surprise, this APP is just the best, when your counting days this APP is the “bomb.”

## Frequently asked questions about Julian Date

### What does the Julian Date app do?

This app converts standard calendar dates into Julian dates and vice versa. It offers two main modes: a 5-digit Julian date conversion and a full Julian date conversion that includes time.

### What are the key features of the Julian Date app?

The app allows you to get the 5-digit Julian date (year and day number) from a calendar date. It also provides a full Julian date conversion, which includes the time of day, and lets you convert Julian dates back to their corresponding calendar dates.

### How much does the Julian Date app cost?

The app is a paid application. There are no in-app purchases or advertisements mentioned, indicating a one-time purchase for full functionality.

### What is the difference between 5 Digit mode and Full Julian Date mode?

The 5 Digit mode converts a calendar date into a 5-digit Julian date, representing the year and the day number within that year. The Full Julian Date mode provides a more precise conversion, including the time of day, resulting in a longer numerical value.

### Can I use this app to convert Julian dates back to standard calendar dates?

Yes, the app allows you to convert Julian dates back to their corresponding calendar dates. This feature works for both the 5-digit Julian date format and the full Julian date format.

## Version history (last 1 release)

### 2.0.2 — 2017-12-22

This app has been updated by Apple to display the Apple Watch app icon.

FIxed issue with 5 digit Julian Date conversion to Calendar​ Date.

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## More apps by Jevon Charles

- [Writing Guide](https://appshunter.io/ios/app/writing-guide/id1540886724)

All apps by Jevon Charles: https://appshunter.io/developer/1124597795

## Related topics

[julian date](https://appshunter.io/ios/topics/julian-date) · [julian date calendar](https://appshunter.io/ios/topics/julian-date-calendar) · [julian date converter](https://appshunter.io/ios/topics/julian-date-converter) · [julien date](https://appshunter.io/ios/topics/julien-date) · [julian calendar](https://appshunter.io/ios/topics/julian-calendar) · [julian date widget](https://appshunter.io/ios/topics/julian-date-widget) · [julian](https://appshunter.io/ios/topics/julian)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-02.*