today's date
L787:                    if (calendar[row][col].isSame(new Date(), "day"))
L788:                        classes.push('today');
L789:
L790:                    //highlight weekends
L791:                    if (calendar[row][col].isoWeekday() > 5)
L792:                        classes.push('weekend');
L793:
L794:                    //grey out the dates in other months displayed at beginning and end of this calendar
L795:                    if (calendar[row][col].month() != calendar[1][1].month())
...