# Datetime Below is a list of available datetime mask functions. ## **Hasher** The Hasher anonymizes datetime values by applying a random offset while maintaining consistency. This ensures that the relative differences between timestamps remain intact while preventing direct identification of the original values. To ensure accurate ordering, please see [ordering and indexing considerations](https://docs.syntho.ai/configure-a-data-generation-job/consistent-mapping#ordering-and-indexing-considerations). #### **Parameters** * No parameters. #### **Example** If you configure: ``` Column names: 1951-12-07, 1966-12-26, 1971-09-23, ... ``` The results will be: ``` Column names: 1957-06-18, 1943-07-30, 2015-09-01, ... ```

## **Datetime Noise** Adds a random shift to a datetime value based on specified minimum and maximum shift parameters. #### **Parameters** * `Maximum negative noise`: The smallest amount the date can be adjusted, relative to the original date. * Use negative numbers to shift the date into the past. * Example: If the date part is set to "Day" and the minimum shift is set to `-5`, this ensures the date will not be shifted earlier than 5 days prior to the original date. * A positive number shifts the date forward. * Example: If the minimum shift is `5`, the date will not shift earlier than 5 days after the original date. * `Maximum positive noise`: The largest amount by which the date can be adjusted from the original value. * Use positive numbers to shift the date into the future. * Example: If the date part is set to "Day" and the maximum shift is set to `5`, the date will not be shifted later than 5 days after the original date. * `Noise type`: The unit of time (e.g., second, minute, hour day, month, year) that will define the granularity of the shift. * The selected unit will be applied to both the minimum and maximum shift fields. * `Consistent mapping`: Datetime Noise supports [consistent mapping](https://docs.syntho.ai/configure-a-data-generation-job/configure-column-settings/consistent-mapping). #### **Example** If you configure: ``` Maximum negative noise: 2 Maximum positive noise: 2 Noise type: Day 1951-12-07, 1966-12-26, 1971-09-23, ... ``` The results will be: ``` 1951-12-05, 1966-12-26, 1971-09-23, ... ```