cityssm/modern-julian-date

# Modern Julian Date

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Converts a regular JavaScript date to the modern Julian date format YYYYDDD,
commonly seen in banking applications.

## Getting Started

```sh
npm install @cityssm/modern-julian-date
```

## Usage

```javascript
import {
  toModernJulianDate,
  toShortModernJulianDate
} from "@cityssm/modern-julian-date";

/*
 * toModernJulianDate()
 * returns date strings in YYYYDDD format.
 */

console.log( toModernJulianDate(new Date(2022, 1 - 1, 1)) );
// => '2022001'

console.log( toModernJulianDate(new Date(2022, 12 - 1, 31)) );
// => '2022365'

console.log( toModernJulianDate(new Date(2020, 12 - 1, 31)) );
// => '2020366'

/*
 * toShortModernJulianDate()
 * returns date strings in YYDDD format.
 */

console.log( toShortModernJulianDate(new Date(2022, 1 - 1, 1)) );
// => '22001'
```