Several people post some excellent material, and I do what I can to promote their content. Mention their name and others can then find and follow them.
I can tell you from experience that posting on Tuesday, Wednesday and Thursday at 8:00 am will produce some fantastic results.
Another hint is that if your post is too “wordy,” it might not be viewed.
A good visual is worth a thousand words.
Do not repost. Instead, take the time to post it again and give the author credit. You will get many more impressions, and they will reach a new audience.