> For the complete documentation index, see [llms.txt](https://doc.duaer.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.duaer.com/getting-started/sunrise.md).

# Sunrise and sunset in Duaer

In Duaer: Sunrise, sunset, solar noon, civil twilight, and day length for a place and up to seven consecutive days. One successful search uses 1 credit.
## What you get

Duaer Sunrise and sunset calculates sun times for a place in its local time zone, one row per day.

Pick Duaer Data → Sunrise and sunset in the node creator, or open the [data market](/getting-started/data-market.md). Related: [US tide predictions](/getting-started/tides.md), [Weather forecast](/getting-started/weather.md).

## When to use it

- Plan photography or fieldwork around daylight.
- Compare day length across seasons or latitudes.

## When not to use it

- Weather. Use [Weather forecast](/getting-started/weather.md).
- Solar energy estimates. Use [Solar and climate (NASA POWER)](/getting-started/nasa-power.md).

## Search on the canvas

1. Open the node creator and pick Duaer Data → Sunrise and sunset.
2. Fill Place (such as Shanghai), or Latitude and Longitude. Optional: Date, Days.
3. Limit defaults to 10, max 20. Execute.

A search uses 1 credit only when it returns rows. No rows, wrong input, or an upstream failure uses 0.

## Call the API

- GET https://api.duaer.com/v1/data/sunrise?place=Reykjavik&date=2026-12-21
- Authorization: Bearer <Duaer key>

The call skill below matches Copy skill in the Duaer data market, with parameters, examples, and result fields.

## Call skill

Same text as Copy skill.

```
---
name: duaer-sunrise
description: >-
  Duaer Sunrise and sunset. Sunrise, sunset, solar noon, civil twilight, and day length for a place and up to seven consecutive days.
  One successful search uses 1 Duaer credit.
---

# Duaer Sunrise and sunset

Duaer Sunrise and sunset calculates sun times for a place in its local time zone, one row per day.

## When to use

- Plan photography or fieldwork around daylight.
- Compare day length across seasons or latitudes.

## When not to use

- Weather. Use https://skills.duaer.com/weather.md.
- Solar energy estimates. Use https://skills.duaer.com/nasa-power.md.

## Call

`GET https://api.duaer.com/v1/data/sunrise?place=Reykjavik&date=2026-12-21`

Header: `Authorization: Bearer <Duaer key>`

Use an account key or a model API key.

Get a Duaer key: https://skills.duaer.com/keys.md

## Parameters

Provide `place`, or `latitude` and `longitude`.

- `place` — Place name, such as Seattle. Duaer looks up its coordinates.
- `latitude`, `longitude` — Optional. Coordinates instead of a place name.
- `date` — Optional. YYYY-MM-DD. Default today.
- `days` — Optional. Consecutive days, 1 to 7. Default 1.

## Examples

- `GET https://api.duaer.com/v1/data/sunrise?place=Reykjavik&date=2026-12-21` — the shortest day in Reykjavik.
- `GET https://api.duaer.com/v1/data/sunrise?place=Shanghai&days=7` — a week of sun times in Shanghai.

## Result

The response is `{ "items": [...] }`. Each item has `source`, `title`, `url`, and `summary`, plus:

- `place`, `latitude`, `longitude`, `timezone` — the point and its time zone.
- `date`, `sunrise`, `sunset`, `solarNoon` — ISO times with offset.
- `dayLengthSeconds`, `civilTwilightBegin`, `civilTwilightEnd` — daylight and twilight.

During polar day or night, `sunrise` and `sunset` are left out and the summary says so.

Fields without a value are left out.

## Credits

A search that returns at least one row uses 1 credit.
An empty search, a search that finds nothing, or a failed search uses 0.
Wrong input returns 400 with a message and uses 0.
No remaining credits returns 402 and does not search.
A missing key returns 401.

## Related

- https://skills.duaer.com/tides.md — Duaer US tide predictions
- https://skills.duaer.com/weather.md — Duaer Weather forecast

```
## Questions

### How many credits does a Sunrise and sunset search use in Duaer?

One credit when Duaer returns rows. A search with no rows or an error uses 0.

### Which time zone does Duaer Sunrise and sunset use?

Duaer Sunrise and sunset returns times in the local time zone of the place.

## Related

- [US tide predictions in Duaer](https://doc.duaer.com/getting-started/tides.md)
- [Weather forecast in Duaer](https://doc.duaer.com/getting-started/weather.md)