Will the Day of Resurrection pass for the believers as swiftly as the time between the Dhuhr and Asr prayers? And does this include all believers or only the pious?

Every believer is pious, and the degrees of piety vary among believers. The Day of Judgment will be lightened for the believers, as it is stated in the Hadith (definition) that "it will be lightened for the believer, to the extent that it will be lighter for him than a prescribed prayer he performs in this world." This lightening varies according to the faith of the believers; the more complete the faith, the lighter the Day will be.