Are you talking about “time” or due date for notifications? While Asana has time, it is my understanding there are not time notifications only due date.
Hey, Michael. If you haven’t already be sure to check out ― and vote for ― the following topic: Push Notifications at 'Due Time'. This seems to be a pretty lively topic/thread. Here’s hoping notifications at ‘due time’ are enabled in some way or another.
While we do not support push notifications at the moment, there has been lots of interest in the community for supporting this feature. I recommend registering your support of this by voting on the link Jason posted in his response.
Push Notifications is a big shortcoming of Asana. Instead, we get emails or Slack notifications and then the presentations of those notifications and related content is poorly implemented. It’s an ongoing complaint from our staff.