# Storing Time Zone Information

On Windows machines, information about time zones, such as offset from GMT, daylight saving specific offsets, and dates for start and end of daylight saving, worldwide, are stored in the registry under the following key:

`HKEY_LOCAL_MACHINE/Software/Microsoft/Windows NT/CurrentVersion/Time Zones`

This information is stored under the binary value labeled TZI.

ASM Core references this information when calculating time zone offsets from the ASM Core server. The TZI value stores a binary representation of the time zone offset to GMT, daylight saving offset, start and end dates for daylight saving.

{% hint style="danger" %}
Alemba strongly recommends that you do NOT modify any part of the Time Zone keys.
{% endhint %}


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.alemba.com/asm-legacy-product-documentation/setup-and-configure-asm/setting-up-your-system/system-administration-settings/system-settings-menu/server-time-zone/storing-time-zone-information.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.