A more thorough explanation:

Calendar call is a meeting that happens before a trial. The judge meets with the lawyers from both sides to decide when the trial will happen and to talk about other things that need to happen before the trial. This is important because it helps to make sure that the trial happens quickly and that the person who is being accused of a crime is not kept in jail for too long.

For example, if someone is accused of stealing a car, they will have a calendar call with the judge and the lawyers. They will decide when the trial will happen and what needs to happen before the trial. This might include things like gathering evidence or talking to witnesses.

Another example is if someone is accused of a more serious crime, like murder. They will also have a calendar call with the judge and the lawyers. This is important because the person who is accused of the crime has a right to a speedy trial. This means that they cannot be kept in jail for too long without having a trial.