According to [How does comment voting and flagging work?][1] over on [Meta Stack Exchange][2] you get 30 comment upvotes per UTC day:  

> ## Comment votes
>
> - ...
>
> - You get 30 comment upvotes per day.

[1]: https://meta.stackexchange.com/a/17365/203389
[2]: https://meta.stackexchange.com/