According to a recent study by LightSpeed Research and the Internet Advertising Bureau, the best time to reach people online is after 6pm. The study was conducted in the UK only, so US numbers could prove to be different.

A tool you can use for Twitter if you are trying to reach a particular person is Tweetoclock. Tweeto’clock will tell you when a person is most likely listening and conversating on Twitter.

The study also touched on what people were doing online to be influenced by an ad. “Attention to ads also varied based on the activites users were engaged in. The greatest proportion of UK Internet users said they were very likely to process an ad while “researching the best deals,” followed by shopping, gambling and searching online.”

Data retreived from emarketer.com