I think that they are refreshing the image with the time. There shoud be lot of pics taken from morning to night to bring that effect and embedded together to show that only one picture is doing all this
Community Support and Knowledge-base on business, career and organisational prospects and issues - Register and Log In to CiteHR and post your query, download formats and be part of a fostered community of professionals.
2
Sun rise and Sun set in Hong Kong(1).xls