CFLib.org – Common Function Library Project

Description:
Returns a date for the US Presidential Inauguration. Returns -1 for non-inauguration years. If no year is specified, defaults to the current year.

Return Values:
Returns a date object.

Example:

<CFIF GetInaugurationDay() EQ -1>
There are no elections this year, therefore there is no Inauguration Day.
<CFELSE>
<CFOUTPUT>
This year, Inauguration Day is on #DateFormat(GetInaugurationDay(), 'dddd, mmm dd')#.
</CFOUTPUT>
</CFIF>

Parameters:

Full UDF Source:

/**
 * Returns the date for Inauguration Day
 * Minor modifications by Rob Brooks-Bilson
 * 
 * @param TheYear      The year you want to return Inauguration Day for. 
 * @return Returns a date object. 
 * @author Ken McCafferty (mccjdk@yahoo.com) 
 * @version 1, August 28, 2001 
 */
//Inauguration Day: Jan 20, every 4 years ,2001,2005 etc. If Jan 20 is Sunday, InaugurationDay is Jan 21
// for other  years, -1 is returned
function GetInaugurationDay() 
{
  Var TheYear=Year(Now());
  if(ArrayLen(Arguments)) 
    TheYear = Arguments[1];
  if(TheYear MOD 4 eq 1){ 
    if(DayOfWeek(CreateDate(TheYear,1,20)) eq 1){  //Sunday
      return CreateDate(TheYear,1,21);
    }
    else{
      return CreateDate(TheYear,1,20);
    }
  } 
  else{
    return -1;
  }
}