nl_tokens: If the month is being set then we don t want to accidentally traverse into a new month just because the target month doesn t have enough days . In other words 5 months ago from July 30th is still February even though there is no February 30th so it will of necessity be February 28th ( or 29th in the case of a leap year ) .
pl_tokens: function checkMonthTraversal ( <mask> , targetMonth ) { if ( targetMonth < 0 ) { targetMonth = targetMonth % 12 + 12 ; } if ( targetMonth % 12 != callDateGet ( date , 'Month' ) ) { callDateSet ( date , 'Date' , 0 ) ; } }