Program JULDATE

Usage

    juldate [<month day year>]

or, alternately,

    juldate [ yesterday | today | tomorrow ]

where month may be either a name (or abbreviation) or number (1...12) for the month, day is day-of-month, and year is the full 4-digit year ("1995" instead of "95"). For the alternate form, the capitalization or not for the argument today (etc.) is not significant: the program handles juldate today and juldate TODAY identically. If there is no command-line argument, the program will give a usage-screen and prompt you for the date to be converted.

Summary

The JULDATE program computes and displays calendar-style date "Month DD, YYYY" for the indicated Julian date YYYYDDD. It also displays the day-of-week (Sunday, Monday, ..., or Saturday), and indicates whether or not daylight savings time should be in effect. In case jdate is out of range, or not given as a command line argument, JULDATE prompts the user for it.

Examples

Some sample executions of this program are as indicated below:

     % juldate Sept 9 1995
 
     Saturday, 1995252
     Daylight Savings Time in effect.

and

     % juldate  9 9 1999
 
     Thursday, 1999252
     Daylight Savings Time in effect.

and

     % juldate
      
     Program JULDATE takes calendar date (in form Month DD YYYY)
     and returns the date in Julian-date form "YYYYDDD".
      
         Usage:  "juldate [<MONTH DAY YEAR>]" 
      
     (if the command-line arguments are missing, prompts the 
     user for them)
      
 
     Enter month (1-12) [7] >> 2
 
     Enter day (1-31) [1] >> 22
 
     Enter year [1988] >> 1922
 
     Wednesday, 1922053
     Standard Time in effect.

or even

     % juldate foo bar
      
      
     Program JULDATE takes calendar date (in form Month DD YYYY)
     and returns the date in Julian-date form "YYYYDDD".
      
         Usage:  "juldate [<MONTH DAY YEAR>]" 
      
     (if the command-line arguments are missing, prompts the 
     user for them)
      
 
     Enter month (1-12) [7] >> 7
 
     Enter day (1-31) [1] >> 7
 
     Enter year [1988] >> 77
 
     >>>  RESPONSE ERROR  <<<
 
          Your response      77 not in the range    1000 ...    9999
          This is error 1 of 5 errors allowed 
          Please try again.
 
 
     Enter year [1988] >> 1977
 
     Thursday, 1977188

     Daylight Savings Time in effect.

Program JULDATE

Usage

Summary

Examples

See Also