# Timestamp Operators in Audience Studio

Audience segmentation is an essential part of any successful marketing campaign. With Audience Studio, Treasure Data provides a variety of timestamp operators that enable you to filter your segment and journey data and create audiences for activation.

TD timestamp operators enable you to filter your audience segment data based on specific date and time criteria. By leveraging these operators, you can accurately filter your segment data and create audiences tailored to your specific marketing goals.

* [Relative Timestamp Operators](#relative-timestamp-operators)
* [Fixed Timestamp Operators](#fixed-timestamp-operators)


# Relative Timestamp Operators

The following relative timestamp operators have been renamed:

* within is now within(legacy)
* today is now today and beyond
* this is now this(legacy)


The functionalities of these timestamp operators have not been changed.

| Operator | Description | Examples |
|  --- | --- | --- |
| in between the next | Selects data between two time intervals in the future (inclusive) | in between the next 3 - 7 days: Select data from the next 3 to 7 days |
| in between the past | Selects data between two time intervals in the past (inclusive) | in between the past 3 - 7 days: Select data from the last 3 to 7 days |
| last | Selects data from a specific unit of time in the past | last day: Select data from the previous calendar daylast month: Select data from the previous calendar month (not the last 30 days)last quarter: Select data from the previous calendar quarter (not the last 3 months) |
| next | Selects data from a specific unit of time in the future | next day: Select data from the next calendar daynext month: Select data from the next calendar month (not the next 30 days)next quarter: Select data from the next calendar quarter (not the next 3 months) |
| not in between the next | Selects data outside of a range of two time intervals in the future | not in between the next 4 - 8 days: Select data newer than last 8 days and older than last 4 days |
| not in between the past | Selects data outside of a range of two time intervals in the past | not in between the past 4 - 8 days Select data older than the last 8 days and newer than the last 4 days |
| not within | Selects data outside of a specific number of units of time in the past | not within the past 2 weeks: Select data older than 2 weeks |
| this | Selects data from the current unit of time only | this hour: Select data from the current clock hourthis day: Select data from the current calendar daythis quarter: Select data from the current calendar quarter |
| this(legacy) | Selects data from the current unit of time | this (legacy): Select data from the current hour without an upper time bound on a future time |
| today | Selects data from the current day only | today: Select data from the current day only |
| today and beyond | Selects data from the current day | today and beyond: Select data from the current day without an upper time bound on future time. |
| within next | Selects data within a specific number of units of time in the future | within next 4 months: Select data from the next 4 calendar months |
| within past | Selects data within a specific number of units of time in the past | within past 4 months: Select data from the last 4 calendar months |
| within(legacy) | Selects data within a specific number of units of time in the past | within(legacy) 4 months: Select data from the last 4 calendar months without an upper time bound on future time |
| yesterday | Selects data from the previous day | yesterday: Select data from the previous day |


# Fixed Timestamp Operators

| Operator | Description | Example |
|  --- | --- | --- |
| `>` after date | Selects data after a specific date and time | > after 2023-01-01 12:00:00: Select data after January 1st, 2023 at noon |
| `<` before date | Selects data before a specific date and time | < before 2023-01-01 12:00:00: Select data before January 1st, 2023 at noon< before 2023-01-01: Select data before January 1st, 2023 |
| `<->` between dates | Selects data between two specific dates or times | <-> between 2023-01-01 12:00:00 and 2023-02-01 12:00:00: Select data between January 1st, 2023 at noon and February 1st, 2023 at noon<-> between 2023-01-01 and 2023-02-01: Select data between January 1st, 2023 and February 1st, 2023 |
| `! <->` not between dates | Selects data outside of two specific dates and times | !<-> not between 2023-01-01 12:00:00 and 2023-02-01 12:00:00: Select data before January 1st, 2023 at noon or after February 1st, 2023 at noon |
| `≠` not on date | Selects data on dates other than a specific date | ≠ not on 2023-01-01: Select data on all dates except January 1st, 2023 |
| `=` on date | Selects data from a specific date | on 2023-01-01: Select data on January 1st, 2023 |
| `≥` on or after date | Selects data on or after a specified date. | ≥ on or after 2023-01-01: Select data on or after January 1st, 2023 |
| `≤` on or before date | Selects data on or before a specified date. | ≤ on or before 2022-12-31: Select data on or before December 31st, 2022 |