How to hide future events from calendar users

You can't prevent calendar users from viewing future dates. However, if you'd like to hide future events from users, you can use this approach: 

1. Create a sub-calendar to hold the future events. Do NOT give users access to this sub-calendar. (The permission should be set to Not Shared for the users who should not see future events). 
2. When you create future events, assign them to this Future Events sub-calendar. 
3. As the future events become current, move them from the Future Events sub-calendar to the user's own sub-calendar (or other sub-calendars visible to the users).
   • Use Scheduler view to make moving events easily: drag them from one column to another to assign them to a different sub-calendar. 
     
     

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You can also change the default calendar view to Day or Multi-Day and disable other calendar views (browser). This can discourage users from looking ahead but will not make it impossible: Users can still change the date into the past or future, and use other calendar views by adding a link parameter.