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.
The best time to visit Tokyo is March, April, October, and November. The weather is nearly perfect, the summer rains and heat have passed, and sightseeing is at its best. Best Time for Good Weather: Late March to May and October to early December. Best Time for Sightseeing: Late March, April, October, and November.