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 vote186 views1 answer
Mysql date + 1 day
SQL
0 vote191 views1 answer
Sql query contains multiple ids
SQL
0 vote180 views1 answer
Sql server bool select
SQL
0 vote192 views1 answer
Postgresql print sessions using the database
SQL
1 vote149 views1 answer
Oracle character set
SQL
0 vote234 views1 answer
Sql convert float to string
SQL
1 vote178 views1 answer
Scaffold mysql database
SQL
1 vote193 views1 answer
Oracle add proxy
SQL
0 vote186 views1 answer
Restart sql server command line linux
SQL
50 votes290 views6 answers
Install mysql on ubuntu
SQL