How to show a particular intervention page on a specific date
You can show a different page according to the date you would like a particular page to be viewed. For example, if you want to end your study on a specific date, you can replace your home page with a 'study finished' page which will tell users that your study has finished and new users will no longer be able to register. You can keep a login button on the new home page so that existing users can still login.
IMPORTANT: IF YOU USE THE LOGIC BELOW TO CHANGE WHEN A PAGE IS DISPLAYED, YOU CANNOT CHANGE THIS DATE ONCE YOUR INTERVENTION HAS GONE LIVE. This logic should only be used when you are absolutely sure that you want a particular page to be displayed at a specific time.
Computers read dates in Unix time (the number of seconds that have elapsed since Midnight on Thursday, 1 January 1970 - Coordinated Universal Time). Therefore, when you want to enter a date into the LifeGuide logic, you will have to enter it in Unix time. Converting a date into Unix time can easily be done here: http://www.onlineconversion.com/unix_time.htm
Example 1
show welcome if (currenttime () < 1398359200)
show welcome_studyclosed if (currenttime () >= 1398359200)
This example uses the function "currenttime ()"
which represents the exact time at the present moment.
The first line of logic will show the welcome page if the current time is earlier (< less than) than Thursday 24th Apr 2014 17:06:40 GMT (ie. Unix time: 1398359200).
The second line will show the page welcome_studyclosed on or after (>= greater than or equal to) this date.