import calendar  
# Show every month  
for month in range(1, 13):  
    cal = calendar.monthcalendar(2020, month)  
    first_week  = cal[0]  
    second_week = cal[1]  
    third_week  = cal[2]  
  
    # If a Saturday presents in the first week, the second Saturday  
    # is in the second week.  Otherwise, the second Saturday must   
    # be in the third week.  
      
    if first_week[calendar.THURSDAY]:  
        holi_day = second_week[calendar.THURSDAY]  
    else:  
        holi_day = third_week[calendar.THURSDAY]  
  
    print('%3s: %2s' % (calendar.month_abbr[month], holi_day))