Oracle sql date winter time

ALTER SESSION SET NLS_LANGUAGE=english; -- First day of week
SELECT
	-- Last Sunday of October at 02:00
	NEXT_DAY(LAST_DAY(TO_DATE(TO_CHAR('01/10/' 
        || (EXTRACT(YEAR FROM SYSDATE)-5 + level) || '02:00:00'), 
           'DD/MM/YYYY HH24:MI:SS')) - INTERVAL '7' DAY, 'SUNDAY') AS H_WINTER,
	-- Last Sunday of March at 02:00 (missing hour)
	NEXT_DAY(LAST_DAY(TO_DATE(TO_CHAR('01/03/' 
		|| (EXTRACT(YEAR FROM SYSDATE)-5 + level) || '02:00:00'),
		'DD/MM/YYYY HH24:MI:SS')) - INTERVAL '7' DAY, 'SUNDAY') AS H_SUMMER
FROM DUAL CONNECT BY level <=10;

Similar codes

0 vote153 views4 answers
Convert databse to achieve log mode oracle
SQL
0 vote140 views1 answer
Take sql dump in to file
SQL
-1 vote135 views1 answer
Utf8_encode mysql
SQL
9 votes129 views4 answers
SQL Date Format
SQL
0 vote132 views1 answer
Mysql timediff
SQL
0 vote174 views1 answer
Update mysql from paypal shopping cart and ipn
SQL
0 vote139 views1 answer
How to get specific salary in sql
SQL
0 vote136 views1 answer
Sum values by month mariadb
SQL
0 vote134 views1 answer
Mysql add to number
SQL
2 votes133 views1 answer
Change primary key sql
SQL