“tool tip” on profile contribution “histogram” has wrong date

For the last several days (perhaps about the time Dark Mode was introduced?) I’ve noticed that the “tool tip” text I see when hovering over the contribution “histogram” (the green bar with a square for each day in last year) is off by a day.

For today (Dec 17, 2020) it says “1 contribution on Dec 16, 2020”.

As near as I can tell everything else is correct, it is just the tool tip that is off by a day. In case this is a time zone issue I live in California (PST, UTC -8).


Hey, to my knowledge, this has always been the case. I looked around here: https://docs.github.com/en/free-pro-team@latest/github/setting-up-and-managing-your-github-profile/viewing-contributions-on-your-profile#contributions-calendar but there was not clear reasoning for this.

I can’t be certain, but “strongly believe” that this was not the way it worked (say) a week ago.

(That if, on a given day, I made two commits, then hovered over the last box drawn, it would say “2 contributions on <today’s-date>”. The last box drawn right now, on Friday Dec 18, is in the vertical position that corresponds to the label “Fri” on the left-hand side.)


I second this. I refer to the contribution map pretty frequently and only noticed this in the past couple of days. The inconsistency is especially obvious if you click on a given day, which filters the history below the map based on that day. The dates listed under Contribution Activity are different than those of the tooltip.

Thanks @rwbennett for confirming that this is a recent change of behavior.

As such, I want to upgrade this issue from “request for help” to “bug report”. I have never filed a bug against GitHub itself. I did a web search for how to do that and ended up on this stackoverflow page which suggests using the GitHub contact/feedback page.

I will do that. If anyone has a better suggestion, please let me know. It is odd that GitHub hosts a gazillion projects with issue tracking pages, but does not have one for itself. :man_shrugging:t2:

Yay! As of sometime today, the bug seems to be fixed. The tool tip for most recent box on the calendar correctly has today’s date.