> ## Documentation Index
> Fetch the complete documentation index at: https://docs.pluvo.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Time

> Time scales are used with variables in [formulas](/modelling/concepts/formulas) to fetch the value at a certain moment in time. For example, #**New Revenue

## Time Scales

Time scales are used with variables in [formulas](/modelling/concepts/formulas) to fetch the value at a certain moment in time. For example, #**New Revenue \[This Month]** returns the value of New Revenue for that same calendar month. Similarly, #New Revenue \[Last Month] returns the previous month's value.

Timescales are relative to the month being forecasted.

For example, if a formula references #**Revenue \[Last month]**, then April's entry would reference March's Revenue, May's entry would reference April's revenue, and so on.

There are a number of options for timescales that allow you to build complex and powerful models and forecasts. Keep reading for an explanation of each.

### Month

<img src="https://mintcdn.com/pluvo-02a06e95/0FuIyQcO0nALAUMz/images/modelling/PgwNccNpkxTA5RxGbr3c.png?fit=max&auto=format&n=0FuIyQcO0nALAUMz&q=85&s=98898b905068b6e6e6709f2abc2294b9" alt="" width="836" height="530" data-path="images/modelling/PgwNccNpkxTA5RxGbr3c.png" />

* This Month - Returns the value for the same month.
* Last Month - Returns the value for the previous month
* Months Prior - Specify a number of months prior, e.g: 4 months ago.
* Specific Date - Specify a specific date, e.g: January 2023.

### Year To Date

<img src="https://mintcdn.com/pluvo-02a06e95/0FuIyQcO0nALAUMz/images/modelling/zzRmNF31PZ8MGF9o94zS.png?fit=max&auto=format&n=0FuIyQcO0nALAUMz&q=85&s=a875cb3e5ac6ef65d3bb478ec9d1f3aa" alt="" width="852" height="386" data-path="images/modelling/zzRmNF31PZ8MGF9o94zS.png" />

* Year to Date - Returns the value for calendar year to the current date
* Fiscal Year to Date - Returns the value for start of the organization's fiscal year to the current date

### Comparison

<img src="https://mintcdn.com/pluvo-02a06e95/0FuIyQcO0nALAUMz/images/modelling/2FRIGOa46AwrrvEYkNTq.png?fit=max&auto=format&n=0FuIyQcO0nALAUMz&q=85&s=ffea5d6611dd5f229f808654ca73a4db" alt="" width="842" height="684" data-path="images/modelling/2FRIGOa46AwrrvEYkNTq.png" />

* This Month vs Last Month - Returns the difference between this month and the previous month, as a number
* This Month vs Last Month (%) - Returns the difference between this month and the previous month, as a percentage
* This Month vs Months Prior - Returns the difference between this month and a month prior, as a number. e.g: this month vs 3 months ago.
* This Month vs Months Prior (%) - Returns the difference between this month and a month prior, as a percentage. e.g: this month vs 3 months ago.
* This Month vs Same Month Last Year - Returns the difference between this month and the same calendar month last year, as a number
* This Month vs Same Month Last Year (%) - Returns the difference between this month and the same calendar month last year, as a percentage

### Cumulative

<img src="https://mintcdn.com/pluvo-02a06e95/0FuIyQcO0nALAUMz/images/modelling/NfDpy9Ab6pMcvRryqfmu.png?fit=max&auto=format&n=0FuIyQcO0nALAUMz&q=85&s=572909b54af6fe154e9475ff6acec9d6" alt="" width="896" height="698" data-path="images/modelling/NfDpy9Ab6pMcvRryqfmu.png" />

* Last 3 Months - Returns a sum of the previous 3 months
* Last 6 Months - Returns a sum of the previous 6 months
* Last 12 Months - Returns a sum of the previous 12 months
* Last 3 Months Average - Returns an average of the previous 3 months
* Last 6 Months Average - Returns an average of the previous 6 months
* Last 12 Months Average - Returns an average of the previous 12 months

## Dates in Formulas

<Note>
  Dates in formulas is coming soon!
</Note>