Question

why it is necessary to have a big clock in train station?​

Answer 1

Answer:

because people can see it from a distance

Answer 2

Answer:

A station clock is a clock at a railway station that provides a standard indication of time to both passengers and railway staff.

A railway station will often have several station clocks. They can be found in a clock tower, in the booking hall or office, on the concourse, inside a train shed, on or facing the station platforms, or elsewhere.