# Store the old data to use latter

**URL:** <https://discourse.nodered.org/t/store-the-old-data-to-use-latter/70749>\
**Category:** General\
**Tags:** database, dashboard\
**Created:** [17 November 2022 05:13 UTC](https://discourse.nodered.org/t/store-the-old-data-to-use-latter/70749 "2022-11-17T05:13:40Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Jhankhana](https://avatars.discourse-cdn.com/v4/letter/j/35a633/32.png) [@Jhankhana](https://discourse.nodered.org/u/Jhankhana)\
**Post date:** [17 November 2022 05:13 UTC](https://discourse.nodered.org/t/store-the-old-data-to-use-latter/70749/1 "2022-11-17T05:13:40Z")

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Hello there, I Need your help!  
How can I store the readings of a particular variables at a particular time and then use that reading after a day to perform math things and display them on the dashboard?  
Thanks in advance!

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**Author:** ![bakman2](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/bakman2/32/6207_2.png) [@bakman2](https://discourse.nodered.org/u/bakman2)\
**Post date:** [17 November 2022 05:44 UTC](https://discourse.nodered.org/t/store-the-old-data-to-use-latter/70749/2 "2022-11-17T05:44:16Z")

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You can do this using context. [See documentation](https://nodered.org/docs/user-guide/context).

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [16 January 2023 05:44 UTC](https://discourse.nodered.org/t/store-the-old-data-to-use-latter/70749/3 "2023-01-16T05:44:53Z")

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