I have an auction site where a user can select a date (day and time) from a calendar and drop down (for time). The dates visible are based on the users time zone UTC -10:00 for example. This date can only be in the future to where the server is which is UTC +10:00 and is used to schedule the active date/time of a listing. THe user can select a duration for the active listing also but lets say 7 days for this example.
The users UTC could be anything and say they select 7 days in their future, not 7 days to the servers future. So if I am in a -12:00 then the date is 23 hours yesterday to where the server is.
How can I work out that the selected 7 days in the users future will actually be 7 days to the server future? The date/time will always be displayed in AEST (+10:00).
So basically their 7 days will be 7 days in AEST regardless of the time zone the user is in.
I hope that makes sense. Cheers!
