The ornamental design for a holidaycalendar, as shown and described.
FIG. 1 is a perspective view of the holiday calendar showing our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a back view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof;
FIG. 8 is a perspective view of the holiday calendar shown in an alternate position;
FIG. 9 is a front view of FIG. 8;
FIG. 10 is a back view of FIG. 8;
FIG. 11 is a left side view of FIG. 8;
FIG. 12 is a right side view of FIG. 8;
FIG. 13 is a top view of FIG. 8; and,
FIG. 14 is a bottom view of FIG. 8.
The broken lines shown in the drawings are included for the purpose of illustrating portions of the holiday calendar and form no part of the claimed design.