# ReferenceError: SunCalc is not defined
**URL:** https://discourse.nodered.org/t/referenceerror-suncalc-is-not-defined/5540
**Category:** General
**Created:** [6 December 2018 18:35 UTC](https://discourse.nodered.org/t/referenceerror-suncalc-is-not-defined/5540 "2018-12-06T18:35:17Z")
**Posts on this page:** 10
**Page:** 1
### Author:  [@or78rXxZ](https://discourse.nodered.org/u/or78rXxZ)
#### Post date: [6 December 2018 18:35 UTC](https://discourse.nodered.org/t/referenceerror-suncalc-is-not-defined/5540/1 "2018-12-06T18:35:17Z")
I really have no idea what I am doing 🙂
I would like to use suncalc to get the sunset and sunrise times for a day.
I installed suncalc in node red and npm. The sunrise node in node red works ok. I added SunCalc:require("suncalc") to my settings .js and tried calling SunCalc in my function node but all I get is "ReferenceError: SunCalc is not defined". Could someone shed a little light here?
Thanks
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### Author:  [@dceejay](https://discourse.nodered.org/u/dceejay)
#### Post date: [6 December 2018 18:40 UTC](https://discourse.nodered.org/t/referenceerror-suncalc-is-not-defined/5540/2 "2018-12-06T18:40:57Z")
Why not use the node-red-node-suncalc node direct ? Check the [flows.nodered.org](http://flows.nodered.org) website
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### Author:  [@or78rXxZ](https://discourse.nodered.org/u/or78rXxZ)
#### Post date: [6 December 2018 19:00 UTC](https://discourse.nodered.org/t/referenceerror-suncalc-is-not-defined/5540/3 "2018-12-06T19:00:42Z")
That would be great if I knew how 🙂
How do I get the sunset and sunrise time from node-red-node-suncalc?
---
### Author:  [@ghayne](https://discourse.nodered.org/u/ghayne)
#### Post date: [6 December 2018 19:06 UTC](https://discourse.nodered.org/t/referenceerror-suncalc-is-not-defined/5540/4 "2018-12-06T19:06:12Z")
By reading the node documentation, searching the forum.
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### Author:  [@or78rXxZ](https://discourse.nodered.org/u/or78rXxZ)
#### Post date: [6 December 2018 19:36 UTC](https://discourse.nodered.org/t/referenceerror-suncalc-is-not-defined/5540/5 "2018-12-06T19:36:00Z")
Thank you, very helpful
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### Author:  [@cflurin](https://discourse.nodered.org/u/cflurin)
#### Post date: [6 December 2018 19:49 UTC](https://discourse.nodered.org/t/referenceerror-suncalc-is-not-defined/5540/6 "2018-12-06T19:49:18Z")
How did you use it in your function node?
Note: [https://discourse.nodered.org/t/how-to-share-code-or-flow-json/506](https://discourse.nodered.org/t/how-to-share-code-or-flow-json/506)
---
### Author:  [@or78rXxZ](https://discourse.nodered.org/u/or78rXxZ)
#### Post date: [6 December 2018 20:21 UTC](https://discourse.nodered.org/t/referenceerror-suncalc-is-not-defined/5540/7 "2018-12-06T20:21:49Z")
I tried
```auto
var times = SunCalc.getTimes(new Date(), 51.5, -0.1);
```
and
```auto
var times = global.get(SunCalc.getTimes(new Date(), 51.5, -0.1));
```
Both returned "ReferenceError: SunCalc is not defined"
---
### Author:  [@knolleary](https://discourse.nodered.org/u/knolleary)
#### Post date: [6 December 2018 20:26 UTC](https://discourse.nodered.org/t/referenceerror-suncalc-is-not-defined/5540/8 "2018-12-06T20:26:37Z")
> [@or78rXxZ](#):
>
> I added SunCalc:require("suncalc") to my settings .js and tried calling SunCalc in my function node but all I get is "ReferenceError: SunCalc is not defined". Could someone shed a little light here?
You'd need to be a bit more specific about what you've tried.
The documentation for how to add new modules to the Function node is here: [Redirecting…](https://nodered.org/docs/writing-functions#loading-additional-modules)
From what you say, I assume your `SunCalc:require("suncalc") ` line is inside the `functionGlobalContext` block in the settings file.
I also assume you've actually installed the `suncalc ` module in `~/.node-red`.
In your Function node you would then do:
```auto
var SunCalc = global.get('SunCalc');
var times = SunCalc.getTimes(....)
```
---
### Author:  [@or78rXxZ](https://discourse.nodered.org/u/or78rXxZ)
#### Post date: [6 December 2018 20:46 UTC](https://discourse.nodered.org/t/referenceerror-suncalc-is-not-defined/5540/9 "2018-12-06T20:46:27Z")
Your suggestion works, as you knew it would.
Yes, I was attempting to follow [https://nodered.org/docs/writing-functions#loading-additional-modules](https://nodered.org/docs/writing-functions#loading-additional-modules) but zero experience with javascript and node red was killing me.
My only programming knowledge is from 22 years of C on HP/UX.
Thanks
---
### Author:  [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)
#### Post date: [8 December 2018 16:19 UTC](https://discourse.nodered.org/t/referenceerror-suncalc-is-not-defined/5540/10 "2018-12-08T16:19:35Z")
If you do it that way, you don't need the node installed.
When using a node, you generally expect that the data it adds is attached to the msg object and you can then pick it up in the next node downstream. This is a generally preferred approach than adding weight to the global variable object.