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.
Not too hot, not too cold. Average temperature in Tokyo is 17 celcious degree. October is not a busy season but if you travel from October 6th to 8th, it's better to book hotels/trains early. This is 3-day holidays in Japan and many people go out for vacation.