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Top Forums Shell Programming and Scripting Day of month and year to mmddyyyy Post 302196775 by jim mcnamara on Monday 19th of May 2008 12:23:48 PM
Old 05-19-2008
from the datecalc FAQ - Julian date thread
Quote:
Originally Posted by Perderabo
What you're doing is more of a day-of-year thing rather than a Julian number thing. But a Julian number calculator can handle this stuff easily.

Get the Julian number for the day before Jan 1 of the year in question:
datecalc -j 2002 12 31
52639

Now calculate the JD of the date you want:
52740=52639+101

Lastly, convert that to a date:
datecalc -j 52740
2003 4 11

Of course, you will want to read the output of the last command into some variables, not just display them.

With ksh, this is really just a one-liner:
Code:
Y=2003
DOY=101
datecalc -j $(($(datecalc -j $((Y-1)) 12 31) + DOY)) | read year month day

You can get datecalc here.
hth
 

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holidays(4)							   File Formats 						       holidays(4)

NAME
holidays - prime/nonprime table for the accounting system SYNOPSIS
/etc/acct/holidays DESCRIPTION
The /etc/acct/holidays file describes which hours are considered prime time and which days are holidays. Holidays and weekends are con- sidered non-prime time hours. /etc/acct/holidays is used by the accounting system. All lines beginning with an "*" are comments. The /etc/acct/holidays file consists of two sections. The first non-comment line defines the current year and the start time of prime and non-prime time hours, in the form: current_year prime_start non_prime_start The remaining non-comment lines define the holidays in the form: month/day company_holiday Of these two fields, only the month/day is actually used by the accounting system programs. The /etc/acct/holidays file must be updated each year. EXAMPLES
Example 1: Example of the /etc/acct/holidays file. The following is an example of the /etc/acct/holidays file: * Prime/Nonprime Table for the accounting system * * Curr Prime Non-Prime * Year Start Start * 1991 0830 1800 * * only the first column (month/day) is significant. * * month/day Company Holiday * 1/1 New Years Day 5/30 Memorial Day 7/4 Indep. Day 9/5 Labor Day 11/24 Thanksgiving Day 11/25 day after Thanksgiving 12/25 Christmas 12/26 day after Christmas SEE ALSO
acct(1M) SunOS 5.10 28 Mar 1991 holidays(4)
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