# Filter for time
**URL:** https://discourse.nodered.org/t/filter-for-time/22818
**Category:** General
**Created:** [8 March 2020 22:08 UTC](https://discourse.nodered.org/t/filter-for-time/22818 "2020-03-08T22:08:52Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@Assi](https://discourse.nodered.org/u/Assi)
#### Post date: [8 March 2020 22:08 UTC](https://discourse.nodered.org/t/filter-for-time/22818/1 "2020-03-08T22:08:52Z")
Hello, I want to filter messages lets say for 30 minutes.
If it comes in before it will be filtered out, the first message that comes after a 30 minute pause shall pass and reset the time again. Is there a library element that can do this ?
Thanks
Eggbert
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### Author:  [@zenofmud](https://discourse.nodered.org/u/zenofmud)
#### Post date: [8 March 2020 22:35 UTC](https://discourse.nodered.org/t/filter-for-time/22818/2 "2020-03-08T22:35:51Z")
Have you searched in the [flows](https://flows.nodered.org) tab of this site? I'd use words like 'rate' or 'limit' and maybe 'throttle' nad see what you can find. Then try some out.
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### Author:  [@dceejay](https://discourse.nodered.org/u/dceejay)
#### Post date: [8 March 2020 22:46 UTC](https://discourse.nodered.org/t/filter-for-time/22818/3 "2020-03-08T22:46:28Z")
Look at the `trigger` node - set to send existing msg on first message, then timeout for 30 minutes then send nothing on second output - don't extend the timer.
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### Author:  [@Assi](https://discourse.nodered.org/u/Assi)
#### Post date: [10 March 2020 19:44 UTC](https://discourse.nodered.org/t/filter-for-time/22818/4 "2020-03-10T19:44:15Z")
> [@dceejay](#):
>
> end existin
thats it, thank you
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### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [24 March 2020 19:44 UTC](https://discourse.nodered.org/t/filter-for-time/22818/5 "2020-03-24T19:44:20Z")
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