Do the nights 'draw in' or 'pull in'?

Solution 1:

Pulling and drawing are exact synonyms in this context.

draw verb (PULL)

C2 [T + adv/prep] to ​pull or ​direct something in a ​particular ​direction:
She drew her ​coat ​tightly around her ​shoulders.
The ​crowd ​watched as the ​referee drew the ​player ​aside/to one ​side and ​spoke to him.
draw the curtains › to ​pull ​curtains so that they are either together or ​apart

Cambridge Dictionaries Online

Examples

Some people use 'pull the curtains' and others say 'draw the curtains'.

A horse can draw a cart or pull a cart.

So it is simply a local difference but it means the same thing.

A check on Google ngram: nights pull in,nights draw in,night pulls in,night draws in shows that, for most publications, nights draw rather than pull.

Detail