When will the itinerary code change to Wuxi on the afternoon of the 12th?

After 24 hours. Communication big data itinerary card, commonly known as "itinerary code". It is a small program developed by the Information and Communications Technology Research Institute of China and the three basic telecommunications companies China Telecom, China Mobile and China Unicom. It uses the "signaling data" of mobile phones to obtain the location of the base station where the user's mobile phone is located. It will arrive at the destination within 24 hours. After the information is updated, the user needs to wait.