> For the complete documentation index, see [llms.txt](https://docs.biologit.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.biologit.com/application/article-screening/article-level-day-zero.md).

# Article-Level Day Zero

Certain workflows require granular tracking of regulatory "day zero" (day where information became available for assessment).

* As standard, Biologit MLM-AI uses the date the search has run, or search results were uploaded into the system as day zero
* It is also possible to track and update Day zero information per article for more granular workflows
* This is possible by enabling "Allow Day Zero Resetting" by the Administrator in the [Settings](/configuration/settings.md) page

### Enable Day Zero per Article

It is required that the administrator user enables "Allow Day Zero Resetting" from the [Settings ](/configuration/settings.md)page:

<figure><img src="/files/Gt5BtlzV4zgtpPk330kq" alt=""><figcaption></figcaption></figure>

### Events that trigger a Day Zero Update

Once enabled users can optionally update Day Zero for an article:

* Upon uploading relevant information for the assessment (i.e. upload an attachment from the [Attachments](/application/article-screening/attachments-and-full-text-screening.md) tab)
* Monitor Administrators can also update day zero as an override

### Updating Day Zero on Attachment Upload

This option requires the article to be saved with a **Pending** decision (see [Workflow ](/configuration/custom-workflows.md#configuring-workflows)configuration)

* When uploading a file, an optional flag to update day zerobecomes available
* This will reset day zero only for this article to today's date (date of file upload)

<figure><img src="/files/N8mZ973ODGJzweyCKzJU" alt=""><figcaption></figcaption></figure>

### Updating Day Zero as Administrative Override

If necessary, users with "Administrator" or "Work Assignment" [permissions](/configuration/team-and-user-management.md#team-permissions) can override the day zero for a particular Article.&#x20;

For these users the day zero widget becomes editable:

<figure><img src="/files/su26EMWNtNc7O81fmP0A" alt=""><figcaption></figcaption></figure>

And the day zero date can be manually updated:

<figure><img src="/files/pQKUetkUI05Vg3ul8JhJ" alt=""><figcaption></figcaption></figure>

### Exports

In the Excel exports, the following additional columns are available to track by-article day zero

* `day_zero_owner`: User who performed the day zero update&#x20;
* `day_zero_set_date`: New day zero for this article&#x20;
* `day_zero_timestamp`: Timestamp when action was performed