Hello my friend,
I'm not sure what kind of articles you're talking about. However, if it's about technical paper or news or products review. I think those articles should be written carefully without grammar and sentence errors in English, which happened a lot in Indian articles.
I have basic understanding and could use some complex English sentences. About timing, I'm also from Viet Nam so there is not much difference between us. I can work from 9 AM to 10 PM at GMT+7.
Best regards,
Brad