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 vote202 views2 answers
Py sqlite if entry exists
SQL
0 vote200 views1 answer
Mysql update from n to 100
SQL
5 votes187 views1 answer
How to check nls timestamp format in oracle
SQL
1 vote213 views1 answer
Alter database datafile maxsize 32g
SQL
0 vote188 views1 answer
Mysql> grant all privileges on *.* to root@localhost identified by 'password' with grant option;
SQL
2 votes213 views2 answers
Install sqlalchemy
SQL
0 vote228 views1 answer
Where date in datetime mysql
SQL
8 votes208 views1 answer
Script to add datafile to tablespace
SQL
0 vote210 views2 answers
Reseed sql identity
SQL
2 votes190 views2 answers
Exec procedure pl sql
SQL