How is the expiry date calculated in eMAM?

How is the expiry date calculated in eMAM?

eMAM system follows UTC Time( http://en.wikipedia.org/wiki/Coordinated_Universal_Time). The time shift works universally for all users and doesn’t change according to the user’s regional time zone. Hence, this link will expire at midnight on April 20th UTC time or 20/04/2011 08:00 AM HKT.