Darkness in the daytimet in KMH

Hai friends!This is regarding may 4^th epi.

Can anyone clear my doubt.How did it go dark in the day time?

I mean when arjun takes arohi from office to his house,its still day time which is before noon as per my guess.Also arohi holds his hand as she is scared of darkness,but its still daytime.Also the precap is shown in dark.

Please answer my query.