---
title: "What does Spirion Sensitive Data Platform define as a \"month,\" when used as a Tag attribute?"
url: "https://dm0bkdes5q7a2ls.productfruits.help/en/article/what-does-spirion-sensitive-data-platform-define-as-a-month-when-used-as-a-tag-attribute"
language: "en"
last_updated: "2026-10-15T19:54:19.386Z"
---

# What does Spirion Sensitive Data Platform define as a "month," when used as a Tag attribute?

This article provides details about the 'month' attribute, which is used in Spirion Sensitive Data Platform in functions such as conditional Tags.

## Overview

In **Spirion Sensitive Data Platform (SDP)**, date and time definitions differentiate between the following:

-   **Calendar-based months**
-   **Relative sliding-window month intervals**
-   **Fixed day counts**

## "Month" Time Interval Examples

When you create a Tag in Spirion Sensitive Data Platform you can include **time attributes** such as "Last Month" and "Older Than X Months."

**Search Date/Time - Last Month**  
![](https://cdn-assets.productfruits.com/f5e165c0-e526-40cd-8635-f372082da365)

**Search Date/Time - Older Than X Months**  
![](https://cdn-assets.productfruits.com/a18c4f85-e7e2-4dce-8cea-aa237247c7a7)

## What is the Difference between time intervals?

### 1\. Month-Based Tag and Filter Operators

| Operator | Type | Definition & Behavior |
| --- | --- | --- |
| `Older Than X Months` *(shown in screenshot above)* | Relative / Sliding Window | Matches timestamps older than **X calendar month(s)** prior to the current evaluation date/time (`< CurrentDate - X months`).<br>For X=1, it targets records older than 1 month ago. |
| `Last X Months` | Relative / Sliding Window | Matches timestamps occurring within the rolling window of the previous **X calendar month(s)** up to the current date/time (`>= CurrentDate - X months`). |
| `This Month` | Calendar Period | Matches timestamps occurring from the **1st day of the current calendar month** through the current timestamp. |
| `Last Month` | Calendar Period | Matches timestamps that fell entirely within the **preceding calendar month** (from the 1st day to the final day of the previous month). |

### 2\. How Spirion Sensitive Data Platform Distinguishes “Month” from “Days”

-   **Month Calculation** (`Older Than X Months` / `Last X Months`):
-   -   Uses **calendar month arithmetic**
    -   **Example**: Standard date arithmetic/`DATEADD(month, -X, ...)`, subtracting **X** months from the current day and month.
-   **Fixed Day Count** (`Last 30 Days` / `Older Than X Days`):
-   -   If a fixed 30-day window is needed rather than calendar-month subtraction, Spirion Sensitive Data Platform provides explicit day-based operators (`Last 30 days`, `Last X Days`, and `Older Than X Days`).