# Timing notation about variables

**URL:** <https://forum.dynare.org/t/timing-notation-about-variables/23172>\
**Category:** General DSGE Modeling\
**Created:** [26 September 2023 03:08 UTC](https://forum.dynare.org/t/timing-notation-about-variables/23172 "2023-09-26T03:08:46Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![AlexLee](https://forum.dynare.org/letter_avatar_proxy/v4/letter/a/258eb7/32.png) [@AlexLee](https://forum.dynare.org/u/AlexLee)\
**Post date:** [26 September 2023 03:08 UTC](https://forum.dynare.org/t/timing-notation-about-variables/23172/1 "2023-09-26T03:08:46Z")

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Hi everyone,

In dynare, we write a(+1) as forward-looking variable if a is an endogenous variable. However, in my code, there was a typo. I wrote a(1). But the code still could run. I am curious if dynare treat a(1) and a(+1) the same.

Thank you,  
Alex

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**Author:** ![jpfeifer](https://forum.dynare.org/user_avatar/forum.dynare.org/jpfeifer/32/5044_2.png) [@jpfeifer](https://forum.dynare.org/u/jpfeifer)\
**Post date:** [26 September 2023 05:25 UTC](https://forum.dynare.org/t/timing-notation-about-variables/23172/2 "2023-09-26T05:25:48Z")

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Yes, the two are identical.

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**Author:** ![AlexLee](https://forum.dynare.org/letter_avatar_proxy/v4/letter/a/258eb7/32.png) [@AlexLee](https://forum.dynare.org/u/AlexLee)\
**Post date:** [26 September 2023 17:05 UTC](https://forum.dynare.org/t/timing-notation-about-variables/23172/3 "2023-09-26T17:05:36Z")

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Thank you, Prof. Pfeifer, for answering my question.