I claim the ornamental design for a calendar key pendant, as shown and described.
FIG. 1 is a perspective view of a calendar key pendant, showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left-side elevational view thereof;
FIG. 5 is a right-side elevational view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken lines showing a month and the numbers 30 and 31 in FIGS. 1 and 2, and the broken lines showing a jewel marker around the number 3 in FIGS. 1, 2, 4–7, and a necklace ring in all of the figures are included for the purpose of illustrating the invention in use, and form no part of the claimed design.