If you are trying to work out the best time to tweet about a news story and get maximum attention, it is worth making a note of the free applications listed in this Mashable post on five tools to help you work out the best time to send out tweets.

The post has been written by Leo Widrich, the co-founder of Buffer, an application which enables you to schedule tweets.

The five tools are:

1. WhenToTweet

2. TweetStats

3. Tweriod

4. TweetReports

5. TweetWhen

Add your Twitter handle to the various websites and the five tools will provide an interesting insight and help in your planning of social media optimisation (SMO) – (although we are not convinced 8am GMT on a Saturday is really the best time for @journalismnews to tweet).