The schedule of 11 public holidays in Singapore which are gazetted and recognized since the establishment of Singapore's 1999 Holidays Act. List of public holidays in Singapore There are generally 11 public holidays a year; however, since the gap between the Islamic calendar and the Gregorian calendar last around 11.5 months, Hari Raya Aidil Fitri and Hari Raya Aidil Adha are respectively celebrated twice in a Gregorian calendar year every 32 or 33 years, as this occurred in 1968 and 2000 for Hari Raya Puasa as well as 1974 and 2006 for Hari Raya Haji, giving Singaporeans 12 public holidays in those years. The list of all the holidays are as follows (listed in alphabetical order): Under the Holiday's Act, should a Public Holiday falls on a Sunday, the following day on Monday would be gazetted as a public holiday (also called holiday-in-lieu). There are however, special occasions, that may be gazetted by the President of Singapore to declare any day to be observed as a public holiday by modifying any days specified in the schedule to the Holidays' Act and if any, another day to be observed as an additional public holiday when in that year two public holidays fall on the same day. One such occasion occurred during the 2015's National Day, whereas an additional day of August 7 was gazetted as a public holiday in addition to August 10 being the holiday-in-lieu. If any public holiday falls on a Saturday in Singapore, the following Monday is declared as a school holiday for students in primary & secondary schools, only if that Monday is not a public holiday itself. 2023 Public Holidays and Long Weekends in Singapore School Holidays School Holidays are special holidays for students of Singapore as gazetted by the Ministry of Education. Holiday periods varies across schools (Primary, Secondary, Institute of Technical Education, Polytechnics, Junior Colleges and Universities). Each academic year is divided into two academic semesters of two terms each, with the end of term beginning a school holiday period, and the end of the holiday period marks the start of a fresh academic term. A post-semestral break is usually longer than those of a mid-semestral break. The fourth and final academic term usually begin after the end of the semestral examination, such as the GCE Ordinary Level. Unlike Public Holidays, school holidays are not gazetted under the Holiday's act, and while also not