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Editorial Team
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Asked: 2026-05-15T05:59:26+00:00

Sample Julian Dates: 2009218 2009225 2009243 How do I convert them into a regular

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Sample Julian Dates:
2009218
2009225
2009243

How do I convert them into a regular date?

I tried converting them using online converter and I got-

12-13-7359 for 2009225!! Makes no sense!

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1 Answer

  1. Editorial Team

    Use the Joda-Time library and do something like this:

    String dateStr = "2009218";
MutableDateTime mdt = new MutableDateTime();
mdt.setYear(Integer.parseInt(dateStr.subString(0,3)));
mdt.setDayOfYear(Integer.parseInt(dateStr.subString(4)));
Date parsedDate  = mdt.toDate();

    Using the Java API:

    String dateStr = "2009218";
Calendar cal  = new GregorianCalendar();
cal.set(Calendar.YEAR,Integer.parseInt(dateStr.subString(0,3)));
cal.set(Calendar.DAY_OF_YEAR,Integer.parseInt(dateStr.subString(4)));
Date parsedDate  = cal.getTime();

    —- EDIT —-
    Thanks for Alex for providing the best answer:

    Date myDate = new SimpleDateFormat("yyyyD").parse("2009218")
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