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 vote126 views1 answer
Export partttion and import in oracle
SQL
1 vote131 views2 answers
Mysql show views
SQL
0 vote139 views1 answer
Sql developer connect to sql server
SQL
1 vote139 views1 answer
Mysql date diff in seconds
SQL
2 votes139 views2 answers
Mysql find max value row
SQL
0 vote204 views1 answer
Mysql update all record removing 2 hours from column
SQL
1 vote134 views1 answer
Set permanent SET GLOBAL sql_mode ubuntu
SQL
1 vote135 views7 answers
Filter
SQL
0 vote134 views1 answer
Pl sql constraint user function
SQL
0 vote164 views1 answer
Oracle running queries
SQL