Do you need to write the specific opening time of the property on the invitation letter?

Need. The invitation letter for real estate needs to be signed and dated. The invitation letter of real estate consists of the name of the meeting and the invitation letter (book). Generally, the name of the organizer and the words "about hosting" can be omitted. The word "invitation letter" is a complete language name, which is different from the "letter" in the official document. It is not appropriate to open it and write a letter about inviting to xx meeting.