by / in

English as a Second Language English Vocabulary, Grammar and Idioms
1
  1. What is the time by your watch?
  2. What is the time in your watch?
    Please correct.
    Thanks.
2

(1) is the correct sentence. ‘In’ is an incorrect preposition here.

3

Beeesneees,
Can I say as below:
‘What is the time now by your watch?’
Thanks.

4

Yes! The addition of ‘now’ does not make the sentence incorrect (in this case).

5

You can also change the place of the word ‘now’ to bring a different emphasis to the sentence:
What is the time by your watch now?