Instructions
Save your game once you have finished placing all of the objects in the Safari Zone area that you are customizing. Restart your Nintendo DS once the save process is complete.
Tap the initial health and safety warning screen, then tap the DS icon at the bottom of the lower screen. This brings up the DS' options menu. Tap the blue icon with the picture of the calendar and clock in it -- this is the second icon from the left.
Tap the calendar icon near the top of the lower screen. Use the arrow keys to alter the date. For example, if the Pokemon you try to lure in the Safari Zone requires you to wait 100 days after customizing the area, change the date so that it is 100 days from the current date. Tap the "Confirm" button once you have finished changing the calendar.
Tap the "Go Back" button at the bottom of the screen to return to the main menu of options. Tap "Quit" to turn off your DS and save the changes. Restart the system and load your game. The internal calendar changes in both your DS and the Pokemon game you are playing. Walk around the Safari Zone until the Pokemon you are trying to lure appears.