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 vote347 views1 answer
Mysql grant access to one database
SQL
0 vote369 views1 answer
Oracle service name view
SQL
12 votes386 views1 answer
Run mysql instance in docker
SQL
0 vote371 views1 answer
Get the Domain Name, Page Name and Query Parameter from a URL
SQL
0 vote346 views2 answers
Reduce size of SQL server log file truncate - Source :NAYCode.com
SQL
5 votes349 views1 answer
Purge undo tablespace oracle 11g
SQL
0 vote392 views1 answer
Create table split string function in sql server
SQL
0 vote350 views1 answer
Query archive mode
SQL
1 vote369 views1 answer
Print year of a date sql
SQL
0 vote348 views2 answers
Postgresql display subquery as json
SQL