| GetFirstMondayOfYear Routines | 
Returns First Monday of the Year, for a given Year.Unit
QESBPCSDateTime
Declaration
Function GetFirstMondayOfYear(const Year: Word): TDateTime;
Description
Used in ISO-8601 Week No Routines.
| Year | 4-digit year such as 1999. | 
| DT | Date to take year from. | 
Category
Date/Time Arithmetic Routines
Week Based Arithmetic Routines
Year Based Arithmetic Routines
Implementation
 
  | function GetFirstMondayOfYear (const Year: Word): TDateTime;
var
     StartYear: TDateTime;
begin
     StartYear := GetFirstDayOfYear (Year);
     if ISODayOfWeek (StartYear) = 1 then
          Result := StartYear
     else
          Result := StartOfISOWeek (StartYear) + 7;
End; | 
Declaration
Function GetFirstMondayOfYear(const Year: Integer): TDateTime;Implementation
 
  | function GetFirstMondayOfYear (const Year: Integer): TDateTime;
var
     StartYear: TDateTime;
begin
     StartYear := GetFirstDayOfYear (Year);
     if ISODayOfWeek (StartYear) = 1 then
          Result := StartYear
     else
          Result := StartOfISOWeek (StartYear) + 7;
End; | 
Declaration
Function GetFirstMondayOfYear(const DT: TDateTime): TDateTime;Implementation
 
  | function GetFirstMondayOfYear (const DT: TDateTime): TDateTime;
begin
     Result := GetFirstMondayOfYear (Date2Year (DT));
End; | 
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