Meaning of お知らせ in Japanese

Definition of お知らせ

おしらせ(oshirase) 【お知らせ ·御知らせ ·お報せ ·御報せ】

ご出発しゅっぱつを前もってまえもってお知らせおしらせください。

Let me know your departure in advance.

ご出発しゅっぱつの時刻じこくをお知らせおしらせ下さいください。

Let me know the time you are leaving.

I would like to know how you will proceed in this matter.

I was told to inform you that your father was killed in an accident.

お知らせおしらせください。

Please let us know.

Would you please let me know when it would be convenient for us to meet?

Yes, sorry, I forgot to acknowledge it.

Anyway, I'll tell you when he comes.

あらかじめ計画けいかくをお知らせおしらせください。

Please let me know the schedule beforehand.

I will come on Wednesday evening unless I hear from you to the contrary.