There are a lot of news posts that have no date mentioned at all in the subject or in the body.
Hence readers have no way to determine when the news occurred.
Please include the date the news was posted (you can usually find this right in the article) in the subject line. People will read your posts tomorrow, next week, next year and maybe in several years from now. It's cool if they know when news happened and the date you post isn't always the day, week, month the news happened.
This is to help all readers, please help out.