---
id: gk-gravityexport-field-flow-timestamp-format
title: "Filter - gk/gravityexport/field/flow/timestamp-format"
sidebar_label: "gk/gravityexport/field/flow/timestamp-format"
tags:
  - "1.9.0"
---

# Filter: gk/gravityexport/field/flow/timestamp-format

:::info[Dynamic Hook Name]

This hook supports dynamic naming with the following modifiers:

1. `$this->field->formId`
2. `$this->field->id`


**Example hook names:**
- `gk/gravityexport/field/flow/timestamp-format` (base hook)
- `gk/gravityexport/field/flow/timestamp-format_1` (with first modifier value)
- `gk/gravityexport/field/flow/timestamp-format_1_2` (with all modifier values)
:::

Controls the date format for Gravity Flow timestamp values.

Only applies when the timestamp type is `gmt` or `local`.

## Parameters

| Name | Type | Description |
|------|------|-------------|
| $format | `string` | The date format. Default <code>Y-m-d H:i:s</code>. |
| $field | [`\GF_Field`](https://docs.gravityforms.com/gf_field/) | The current field object. |

### Since

- [1.9.0](../../since/1-9-0/)

### Source

Defined in `src/Field/FlowField.php` at line 533