The time for my casio wave ceptor world time is incorrect, even the date and day are incorrect. I replaced the battery but to no avail.

Press and hold both the top and bottom button at the same time for 5 seconds. It will go into analog time set mode. If you press the top button, the second hand will move forward slowly. Press repeatedly until the second hand is directly at the 12 mark. Then press the bottom button once to switch to minutes/hours. Then press the top button again to move the hour and minute hands together toward the 12 mark. You can hold the bottom button for a second and it will sweep rapidly. When it gets near the point where both hands are at the 12 mark, pressing the top button again will stop the rapid movement. At that point press and release the top button until both hand are at the 12 mark. When all three hands are together at the 12 mark, the watch is readjusted for analog time. Press the bottom button again to exit. You must still set the time zone correctly, or let it set automatically from the atomic clock.

I was able to solve the problem by downloadsing a manual.