# Analysis Period question

**URL:** <https://discourse.ladybug.tools/t/analysis-period-question/7141>\
**Category:** uncategorized\
**Created:** [September 11, 2019, 10:41am UTC](https://discourse.ladybug.tools/t/analysis-period-question/7141 "2019-09-11T10:41:26Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Bogdan](https://discourse.ladybug.tools/letter_avatar_proxy/v4/letter/b/ce7236/32.png) [@Bogdan](https://discourse.ladybug.tools/u/Bogdan)\
**Post date:** [September 11, 2019, 10:41am UTC](https://discourse.ladybug.tools/t/analysis-period-question/7141/1 "2019-09-11T10:41:26Z")

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Hi,  
just to make sure

If i have the settings like in the screenshot below, I calculate for the whole year, on day 21, between 9am and 6pm each day? (in total 9hoursx12months?)

or is it from 9am in January until 6pm in December? ( a lot more hours)

 ![image](https://discourse.ladybug.tools/uploads/default/original/2X/0/0e30fb90751c00cb25e5c88068170cae10169906.png)

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**Author:** ![justpop](https://discourse.ladybug.tools/user_avatar/discourse.ladybug.tools/justpop/32/13299_2.png) [@justpop](https://discourse.ladybug.tools/u/justpop)\
**Post date:** [September 19, 2019, 4:52pm UTC](https://discourse.ladybug.tools/t/analysis-period-question/7141/2 "2019-09-19T16:52:23Z")

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The analysis period will be from 21 of January at 9 am until 21 of Dec at 6 pm

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**Author:** ![mostapha](https://discourse.ladybug.tools/user_avatar/discourse.ladybug.tools/mostapha/32/15244_2.png) [@mostapha](https://discourse.ladybug.tools/u/mostapha)\
**Post date:** [September 19, 2019, 8:39pm UTC](https://discourse.ladybug.tools/t/analysis-period-question/7141/3 "2019-09-19T20:39:51Z")

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The analysis period will be from 21 of January ~~at 9 am~~ until 21 of Dec ~~at~~ _between 9am_ to 6 pm

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<div class="post-metadata">

**Author:** ![Bogdan](https://discourse.ladybug.tools/letter_avatar_proxy/v4/letter/b/ce7236/32.png) [@Bogdan](https://discourse.ladybug.tools/u/Bogdan)\
**Post date:** [September 20, 2019, 8:16am UTC](https://discourse.ladybug.tools/t/analysis-period-question/7141/4 "2019-09-20T08:16:24Z")

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Thank you @mostapha!  
And how do I set it up to calculate only 21 of January 21 of February 21 of March… etc, only 1 day per month between 9am and 6pm ?

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**Author:** ![Sveisberg](https://discourse.ladybug.tools/user_avatar/discourse.ladybug.tools/sveisberg/32/14124_2.png) [@Sveisberg](https://discourse.ladybug.tools/u/Sveisberg)\
**Post date:** [November 24, 2019, 4:36pm UTC](https://discourse.ladybug.tools/t/analysis-period-question/7141/5 "2019-11-24T16:36:15Z")

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Hi Mostapha  
Is there any way how to exclude time 9am to 6pm?  
thanks