How to correlate the implementation date of a specific task and sprints?

Question

Agile

Let's say development goes in sprints of 2 weeks, but there are tasks that need to be completed by a certain date and launch this functionality on the appointed day. How to relate such a task and iterations?

Answer 1

No way. It is necessary to explain to the customer or client that it is impossible to immediately wash and cut your head at the same time. And in between times, by a certain point, make a perm. It is possible to correlate and implement this only in order, and sequentially in sprints.
An agile approach means not breaking the active sprint at will, but carefully scheduling tasks and adapting to changing circumstances in the next sprint.
If you manage to explain this to the customer, then both of you will win. If not, the customer will suffer losses and you will produce a poor-quality product.

Answer 2

on the appointed day, launching the functionality is more likely from a vatefol, and not from a flexible approach.
and it’s not the customer who decides when and what will be ready, but the contractor.

Answer 3

There is a process that is made for exactly this, called Scrumban .
In parallel, there are sprints and the solution of urgent requests (by the date or as soon as possible - it does not matter).