select min(date1), year1
from table
where date1 = ( select min(date1)
                   from table
                 )
group by year1, date1;

select to_char(min(date1),'DD-MM'), year1
from table
where date1 = ( select to_char(min(date1),'DD-MM')
                   from table               
                 )
group by year1, date1; 

SELECT TOP 1 date1 WITH TIES
FROM table
ORDER BY DATEADD(yy,1900-YEAR(datefield),datefield) ASC

select date1
  from table
 where min(to_char(date1,'MMDD')=(select min(to_char(date1,'MMDD')
                                    from table               
                                 )