This means "when" or "at the time of." You use it for important or special events. It is a formal way to say this.
Noun + に際しPrimary
Verb [dictionary form] + に際し
This means "when" or "at the time of." You use it for important or special events. It is a formal way to say this.
開会に際し、主催者より一言ご挨拶申し上げます。
On the occasion of the opening, the organizer would like to say a few words.
首相は外遊に際し、多くの国と友好関係を深めた。
The Prime Minister, on the occasion of his trip abroad, deepened friendly relations with many countries.
事業の閉鎖に際し、従業員の再就職支援が十分に行われなかった。
Upon the closure of the business, sufficient re-employment support for employees was not provided.
このシステムのご利用に際し、いくつかの注意点がございます。
Regarding the use of this system, there are several points of caution.
新しい法律を施行するに際し、国民への十分な説明が求められる。
When enforcing the new law, a full explanation to the public is required.
Imagine a big, important event. This phrase is for those special times. Think of a graduation or a new job. It is not for everyday things like going to the store.
This is different from 〜にあたって (ni atatte). That phrase is for good, new things. This phrase can be used for good or bad events. For example, closing a business.
Don't use this when you are talking with friends. It sounds too formal, like a speech.
More formal alternatives(1)
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