What is Charting in Railway? Charting - is the process of allocating the vacant seats of other quota to general/tatkal quota. There are many quotas under which the seats are assigned in Indian Railways. The first chart is usually prepared 4 hours before departure of train from originating station or remote location station. For early morning trains chart is prepared the night before. If the seats remain vacant in first chart, the remaining seats are made available for booking. The final chart is made 30min before departure of train. Some waiting list tickets are confirmed. Berth and coach number is assigned to all passengers having final status as confirmed or RAC. Fully waiting list e-tickets are automatically cancelled. Some passengers also get upgraded which means they get accommodation in higher class without paying any extra charge. Fully confirmed tickets cannot be cancelled after chart preparation.