What was the latest update time of ID mp-19308 data?

I especially want to know, when was the last update time of ID 22 data?

Hi @galaxyreborn, welcome! You can look at the information for the calculations that went into this material here: https://materialsproject.org/tasks/mp-19308#mp-19308

That page lists a calculation time of 2014-02-15. We might have done further processing since then, since we sometimes re-parse old calculations to check for bugs, but the calculation itself was performed in 2014.