Oracle date summer 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 vote149 views1 answer
Mysql_error replacement
SQL
0 vote239 views1 answer
Add user mysql wordpress
SQL
2 votes153 views3 answers
Install mysql workbench ubuntu 20.04 terminal
SQL
1 vote177 views1 answer
Show per page table in xampp
SQL
1 vote163 views1 answer
Sql how to replace full stop
SQL
10 votes143 views4 answers
Primary key in sql
SQL
7 votes141 views3 answers
How ot change name of column mysql
SQL
0 vote153 views1 answer
Oracle sql copy table without data
SQL
0 vote132 views1 answer
Duplicate foreign key constraint name
SQL
2 votes176 views1 answer
Oracle trace file
SQL