# Historian returns different results for 28-day vs 29-day queries

**URL:** <https://forum.inductiveautomation.com/t/historian-returns-different-results-for-28-day-vs-29-day-queries/117246>\
**Category:** Ignition\
**Created:** [September 29, 2026, 4:03pm UTC](https://forum.inductiveautomation.com/t/historian-returns-different-results-for-28-day-vs-29-day-queries/117246 "2026-09-29T16:03:51Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Rats](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/rats/32/68478_2.png) [@Rats](https://forum.inductiveautomation.com/u/Rats)\
**Post date:** [September 29, 2026, 4:03pm UTC](https://forum.inductiveautomation.com/t/historian-returns-different-results-for-28-day-vs-29-day-queries/117246/1 "2026-09-29T16:03:51Z")

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Hi all,

Seeing a weird issue with data retrieval from one of our historians. The data from the past 29 days and beyond seems to retrieve normally:

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/4/1/413eeb2aa861bdd4569a3fa98cebda28729c863d.png)

But looking at it from 28 days looks like this:

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/9/d/9d6d24985ae74ae6b121838aa3233b7e365e846c.png)

I'm guessing it has something to do with the way the historian is partitioning the data as it looks different from a healthy sister machine.

Broken historian partitions:

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/6/8/685637c073dbe0ba8048f69c55e34e08f80014cf.png)

Working sister machine historian partitions:

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/c/7/c7b6eaf38bfd075b56206df4f69a295aca5922d3.png)

"Ignition edge 8.3.8" using store and forward to another Ignition gateway, "Ignition standard 8.3.9"