Q. When do laws take effect? (Solved)

1. Upon approval by the President;

2. After 15 days following the publication in the Official Gazette or in a newspaper of general circulation;

3. After 15 days following its posting in the website of Congress considering the advances in science and technology;

4. After 15 days following the completion of their publication in the Official Gazette or in a newspaper of general circulation and furnishing the UP Law Center with a copy unless it is otherwise provide