Indian Railways allows passengers to book tickets in advance, up to 120 days before their journey. This information is available on the official website. Passengers can book tickets four months in advance for a comfortable journey. In case of urgent bookings, tickets can be booked through the Tatkal quota up to...
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one day before the train's departure from its originating station. It is important to note that bookings for Tatkal tickets are only available until one day before the train departs from its originating station, not from the station you are boarding from.