> ## Documentation Index
> Fetch the complete documentation index at: https://docs.superoffice.com/llms.txt
> Use this file to discover all available pages before exploring further.

# TZStdRule table

> Time zone rule for standard time

## TZStdRule Table (246)

Time zone rule for standard time

## Fields

| Name                      | Description                                                                                                                      | Type                              | Nullable |
| ------------------------- | -------------------------------------------------------------------------------------------------------------------------------- | --------------------------------- | :------: |
| TZStdRule\_id             | Primary key                                                                                                                      | PK                                |    No    |
| TZLocationId              | Location that this rule is valid for - one location has at least one rule; multiple rules are discerned by their validFrom dates | FK [TZLocation](./tzlocation.mdx) |    No    |
| validFrom                 | Date this rule is valid from                                                                                                     | DateTime                          |    No    |
| bias                      | number of minutes bias relative to UTC time                                                                                      | Short                             |    No    |
| description               | Description, for identifying the rule in SoAdmin                                                                                 | String(2047)                      |    Yes   |
| isBuiltIn                 | Is this row part of SuperOffice priming data                                                                                     | Bool                              |    Yes   |
| registered                | Registered when                                                                                                                  | UtcDateTime                       |    No    |
| registered\_associate\_id | Registered by whom                                                                                                               | FK [associate](./associate.mdx)   |    No    |
| updated                   | Last updated when                                                                                                                | UtcDateTime                       |    No    |
| updated\_associate\_id    | Last updated by whom                                                                                                             | FK [associate](./associate.mdx)   |    No    |
| updatedCount              | Number of updates made to this record                                                                                            | UShort                            |    No    |

<img src="https://mintcdn.com/superofficeas/3ZhivzBeXAvFeVZx/media/loc/en/database/tables/TZStdRule.png?fit=max&auto=format&n=3ZhivzBeXAvFeVZx&q=85&s=cc85344527aae6cd3ab1b8c4baa2d566" alt="TZStdRule table relationship diagram" width="651" height="59" data-path="media/loc/en/database/tables/TZStdRule.png" />

## Indexes

| Fields       | Types | Description |
| ------------ | ----- | ----------- |
| TZLocationId | FK    | Index       |

## Relationships

| Table                      | Description                                                        |
| -------------------------- | ------------------------------------------------------------------ |
| [associate](./associate)   | Employees, resources and other users - except for External persons |
| [TZLocation](./tzlocation) | Time zone location                                                 |

## Replication Flags

* Replicate changes DOWN from central to satellites and travellers.
* Replicate changes UP from satellites and travellers back to central.
* Copy to satellite and travel prototypes.

## Security Flags

* No access control via user's Role.


## Related topics

- [TZLocation table](/en/database/tables/tzlocation.md)
- [message_header table](/en/database/tables/message-header.md)
- [associate table](/en/database/tables/associate.md)
- [password_rules table](/en/database/tables/password-rules.md)
- [TZDstRule table](/en/database/tables/tzdstrule.md)
- [RecurrenceRule table](/en/database/tables/recurrencerule.md)