Get Fiscal Year from Date in Google App Script - FY begins in Feb

gistfile1.txt

function fyQ(date) {
  var d = new Date(date);
  var month = d.getMonth()+1;
  var year = d.getFullYear();
  // FY
  if (month > 1) {
    var year = year + 1
  }
  Logger.log("Year: " + year + " month: " + month)

  var year = year.toString().substr(2,2);
  var fy = "".concat("FY",year);
  
  if (month == 11 || month == 12 || month == 1) {
    var Q = "Q4"
  }
    
  else if (month <=4) {
    var Q = "Q1"
  }
  else if (month <=7) {
    var Q = "Q2"
  }
  else if (month <=10) {
    var Q = "Q3"
  }

  var fyQ = "".concat(fy," ",Q);
  
  return fyQ;
}

function fQ(date) {
  var d = new Date(date);
  var month = d.getMonth()+1;
  var year = d.getFullYear();
  // FY
  if (month > 1) {
    var year = year + 1
  }
  Logger.log("Year: " + year + " month: " + month)
  var year = year.toString().substr(2,2);
  var fy = "".concat("FY",year);
  
  if (month == 11 || month == 12 || month == 1) {
    var Q = "Q4"
  }
    
  else if (month <=4) {
    var Q = "Q1"
  }
  else if (month <=7) {
    var Q = "Q2"
  }
  else if (month <=10) {
    var Q = "Q3"
  }
  
  return Q;
}