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MathGroup Archive 2001

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Re: Date calculating software?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg30414] Re: [mg30390] Date calculating software?
  • From: BobHanlon at aol.com
  • Date: Fri, 17 Aug 2001 03:09:53 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

In a message dated 2001/8/15 1:06:37 AM, NOSPAM at austracom.nz writes:

>Is there a software program or calculator available that can eg. Add a
>period of time to a date?
>
>example, today is 14 August 2001.
>
>14082001 + 18 months
>
>or
>
>14082001 + 1yr, 3mths, 4 days, and produces the date 1yr, 3mths and 4 days
>hence?
>

Needs["Miscellaneous`Calendar`"];

daysPlus[date_, n_] := 
    DaysPlus[date, 
      Ceiling[n /. {year :> 365.25, month :> 365.25/12, day :> 1}]];

daysPlus[{2001, 8, 14}, 18 month]

{2003, 2, 13}

daysPlus[{2001, 8, 14}, 1 year+3 month+4 day]

{2002, 11, 18}


Bob Hanlon
Chantilly, VA  USA


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