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Hello, I will try to clarify the maximum of my doubt , we go by parts:
My user will schedule a task with date and time set, for example, scheduled a task on October 20, 2017 at 15:00 hours and other users will see this task marked , this information will go to a backend.
How could I send a push notification on October 20, 2017 at 14:00 (1 hour before) by notifying that task?
I never used Ionic but I believe that the backend where the application is subscribed to send the push notification or (if the subscription is not in this backend) this backend should send to a service where the application is subscribed
– Lauro Moraes