The Social Computing lab at HP has released a research paper that finds a strong correlation between the popularity of content on Digg and the time when that submission was made.
The research confirms that the best time to submit a new story on Digg is a weekday afternoon in the US.
So if you are based on the other side of the world (e.g. India), make sure you postpone all Digg submissions until midnight for maximum
diggs exposure and do take a Digg-break on weekends.
Afternoons in America are the best time to Digg.
Let’s try understanding the first graph – while the digg count and promoted story count are 4-5X higher in the day time than night, the submitted count is only around 3X higher. So despite higher competition, the promoted story ratio is much higher in the day time.
Related: Know When People Digg Your Stories