# Explore Date and Time Calculations

Source: https://openflow.run/zh-cn/templates/date-and-time-calculation-examples/
Content language: en
Template revision: 5b4ebb0d2fbb329baf98dfe4b5d5ae6331e19984

实用工具

Explore date arithmetic and formatting with two date and time examples.

[在 Open Flow 中使用](https://console.openflow.run/flows?importUrl=https%3A%2F%2Fraw.githubusercontent.com%2Foomol-lab%2Fawesome-workflow-templates%2F5b4ebb0d2fbb329baf98dfe4b5d5ae6331e19984%2Fworkflows%2Fdate-and-time-calculation-examples%2Ftemplates%2Fdate-and-time-calculation-examples.openflow.json)

*   [Open Flow JSON](https://raw.githubusercontent.com/oomol-lab/awesome-workflow-templates/5b4ebb0d2fbb329baf98dfe4b5d5ae6331e19984/workflows/date-and-time-calculation-examples/templates/date-and-time-calculation-examples.openflow.json)
*   [n8n JSON](https://raw.githubusercontent.com/oomol-lab/awesome-workflow-templates/5b4ebb0d2fbb329baf98dfe4b5d5ae6331e19984/workflows/date-and-time-calculation-examples/templates/date-and-time-calculation-examples.n8n.json)

![Explore Date and Time Calculations 在 Open Flow 中的工作流截图](https://openflow.run/_astro/preview-light.CjdkC-5A_21XRm7.webp)

Explore date arithmetic and formatting with two date and time examples.

## Setup and use

Run the workflow manually. It uses the execution environment’s local time zone. In n8n, set the workflow time zone to match the host for comparable results.

## Behavior

The Set example produces the current time, today’s and tomorrow’s midnight, a time one hour earlier, and the weekday. The field named “One hour from now” follows the source expression and actually subtracts one hour. It then parses and formats the current date as `yyyy LLL dd`.

The Date & Time branch calculates 12 hours ahead, then formats a fresh current time as `MMMM DD YYYY`. The latter node reads the current time directly rather than the calculated value. Open Flow exposes both the 12-hour result and the final formatted value along with the Set example; in n8n, inspect the first Date & Time node for the intermediate value. Date and time examples use English formatting.

Inspiration & credits

## Changes to the source

*   Open Flow combines the two examples in a Code node and returns their values together. It uses the host’s local time zone; n8n uses its configured workflow time zone for expressions.

Adapted from [Date and time examples](https://github.com/Zie619/n8n-workflows/blob/ae8cf6dc5b873cbb4f74587aa9180ed3a9f70682/workflows/Manual/0226_Manual_Stickynote_Update_Triggered.json) in [Zie619/n8n-workflows](https://github.com/Zie619/n8n-workflows). The source export does not identify a separate template author or license.

The collection’s [MIT notice](https://github.com/Zie619/n8n-workflows/blob/94007c1445d9258a7da116646b79473e7c7c3282/LICENSE) is pinned at a later revision. This is the collection notice at that revision; it does not establish a separate original template author’s license. Our changes are listed above; see [repository licensing](https://github.com/oomol-lab/awesome-workflow-templates/blob/5b4ebb0d2fbb329baf98dfe4b5d5ae6331e19984/README.md#licensing).

> MIT License
> 
> Copyright (c) 2025 Zie619
> 
> Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
> 
> The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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> THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

*   dates
*   examples
*   data

[在 GitHub 查看](https://github.com/oomol-lab/awesome-workflow-templates/blob/5b4ebb0d2fbb329baf98dfe4b5d5ae6331e19984/workflows/date-and-time-calculation-examples/README.md)