N2 — outside your level filter
write + on the occasion of
kaku ori ni
on the occasion of; when the opportunity arises — the warmer, letter-register cousin of 際に, often about an occasion that may or may not come
meaning: on the occasion of writing
出張で大阪へ行くおりに、恩師を訪ねるつもりだ。
shutchou de oosaka e iku ori ni, onshi o tazuneru tsumori da.
I plan to visit my old teacher, on the occasion of going to Osaka on a business trip. neutral
友人と久しぶりに会った折に、昔の写真を見せてもらった。
yuujin to hisashiburi ni atta ori ni, mukashi no shashin o misete moratta.
When I met up with a friend after a long time, they showed me some old photos. neutral