The ornamental design for a timedisplay for a timepiece or computer screen, as shown and described.
FIG. 1 is a top plan view of a time display for a timepiece or computer screen, showing the new design.
FIG. 2 is a top plan view of the time display for a timepiece or computer screen, showing the new design in an environment of use. In FIG. 2 and all other drawings herein where broken lines appear, the broken lines are for the purpose of illustrating environments of use, and form no part of the claimed design; and,
FIG. 3 is a top plan view of the time display for a timepiece or computer screen, showing the new design in an environment of use.