Is this sentence okay?

Anonymous'There's no certain time I come online'

I'd put that idea the following way:

There's no certain (or you could say 'specific' as well) time for me to come online.

That would be the most apt way to put it. @Laborious
Albeit, I wanna ask, does this version sound correct -
"There's no specific time when I come online."

The "come on line" bit sounds a bit odd to me. Electronic devices come online. That is to say they have booted up and are ready to use.

People go on line when they are on the internet.

Also I wouldn't say "for me to" either. "There's no specific time that I go on line"

I see nothing wrong with that, RS.

Thanks @Laborious

@Rick Terry: There is no harm in using either of the terms 'go' or 'come', when people are talking about being online.
These 2 words are used interchangeably whether be it for Electronic devices or for people.

@rakshit sinha - I see what you are saying, but as a native speaker I just don't feel people (at least from my part of England) would use "come online" in this particular sentence. I might be old and fuddy-duddy but to my ear it sounds a little off.

Granted, we might say "I'll wait for you to come online and then we'll chat about it" or to invite someone to join you online as in "Come o

Gotcha.
Although I'm no native speaker, but being in this tech field for about a few years now, it deemed fit to my ears. Just

Thank you all for your help.

Pleasure.

This is how I would approach this question. Idiomatically and semantically, there is a difference between " come " and "go". He usually comes home around 6 ( person is speaking from home ). He goes home around 6 every day ( the person is speaking from the place of work). For internet, I would say " There is no specific / particular time I get on line ", which translates to " I get online whenever