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C. A. - Julian calendars are in use for date tracking by some corporations and government agencies. The calendar makes it possible to track each day for a century using only five numerical places (digits).
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Intrceptor -
Julian calendar is used mainly to track days between dvents, mainly for financial, supply, logistical and contract support. For instance, if one placed an order for a product or service on 03 Jul 03 (03184) and received it on 03 Oct 03 (03276), rather than add up the days in the months to determine how long it took to receive it, one would use the difference in the Julian calendar dates to determine there were 92 days between order and receipt. If the difference was between years one would use the regular subtraction method but use 365 (or 366) added to the last 3 numbers to determine the difference. For instance if youo placed that order on 03 Oct 03 (03276) and expected to receive it on 04 Jan 04 (04004) the latter Julian number wuld convert to 03369 and the number of days between dvents could be determined as 93. It was particularly useful in the earlier days of computerized operations when memory and storage capacity were in much shorter supply and more expensive.
Some glitches in this: The 5-number Julian date "04004" represents 04 Jan 2004 but could just as easily represent 04 Jan 1904 or 04 Jan 2104. And the year 2000 was a leap year, but 1900 wasn't and 2100 won't be. If one were working with that long a time frame, such as one would for historical dvents, one would use the 7 number designation including the full year (2003276 and 2004004, using above examples)
If you're going to use it to determine the days between hits to help you refine your pick system, it's ideal. Don't forget leap years and you're on your way.
gl