Mango Timezone Issues: Troubleshooting GMT Displays

Karen Mitchell2 min read
HMI / SCADAOther ManufacturerTroubleshooting
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Define the Timezone Mismatch

The reported Mango display is inconsistent: the chart associated with data_point_details.shtm uses local time, while the watchlist or history appears to use GMT. The Linux server is configured for IST, so the visible mismatch cannot be attributed to an unchecked server setting alone.

Display Observed timezone Configuration evidence
Chart on data_point_details.shtm Local time The chart object's applied timezone appears correct.
Watchlist or history Appears to be GMT No timezone control is identified in the evidence.
Linux server IST Reported as correctly configured.

Check the Mango Version First

Mango version determines the available correction path. A per-user timezone setting is confirmed on the user settings or user details page for Mango 2.0.6 and 2.0.7. Its availability and behavior in earlier releases are not established. In particular, a Mango 1.13.0 user could not find the “use server time” preference, and the available evidence does not identify an equivalent control in that version.

Apply the Supported User Setting

  1. Record the Mango version before changing timezone configuration.
  2. On Mango 2.0.6 or 2.0.7, open the affected user's settings or details page.
  3. Select the required explicit timezone, or retain “use server time” when the server timezone is the intended reference.
  4. For Mango 1.13.0 or another unconfirmed release, do not assume that this per-user control exists. Inspect the available user settings and product documentation for that exact release.

Verify Every Affected View

After saving the user preference, compare the same timestamp in the data_point_details.shtm chart, watchlist, and history. Confirm that all three show the intended local time for the same user. If the chart remains correct but the watchlist or history remains in GMT, document the Mango version, affected page, user setting, server timezone, and matching timestamps; the evidence does not establish a further version-specific correction.

FAQ

Where is the Mango “use server time” setting?

In Mango 2.0.6 and 2.0.7, it is available per user on the user settings or user details page. Its location or availability in earlier versions is not confirmed.

Why does Mango history show GMT when Linux is set to IST?

The evidence shows that the chart, watchlist, and history can display inconsistent timezone results even when Linux is set to IST. Check the Mango version and the affected user's timezone preference before treating the operating-system setting as the sole cause.

Does Mango 1.13.0 support a per-user timezone preference?

The evidence does not confirm that it does. A Mango 1.13.0 user could not find the setting, while its presence is specifically confirmed only for versions 2.0.6 and 2.0.7.

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