OCN is a three letter abbreviation that stands for: 1  OCLC Control Number, a bibliographic record identifier. 2  In Oncology nursing, an Oncology Certified Nurse. 3  Opaskwayak Cree Nation. 4  Open College Network.
Autumn is from September to November and is characterised by light breezes and cooler temperatures of around 46-50ÂºF. Itâs during autumn that many exhibitions, music concerts and sports tournaments are held in Japan.
Average Weather in September in Helsinki Finland. In Helsinki, the month of September is characterized by rapidly falling daily high temperatures, with daily highs decreasing by 9Â°F, from 63Â°F to 54Â°F over the course of the month, and rarely exceeding 70Â°F or dropping below 46Â°F.