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.
Spring (March to May). The best time to visit Japan, with mild weather and trees blossoming (most famous being the cherry). Warm days, but a sweater is advisable for chilly evenings. Tthe cherry-blossom time which sweeps up the country from south to north is often followed closely by a showery front.