actualNoteContentPart: Amplenote offers the ability to calculate relative dates and mathematical formulas by using surrounding your formula in curly braces, for example if you enter {1+1}, we will calculate the result and store the formula in a [Rich Footnote](/help/rich_footnotes_content_preview)  like this:  [2]()  
  
  Following are the types of calculations Amplenote can make, and how those can be used for more effective backlinking.
  
  # Date & time calculations
  Date calculation is often combined with double-bracket syntax to link to notes named for future days, which will show up in Jots mode when that day arrives. You can see this in action in [Shu Omi's video at the 13:15 mark](https://www.youtube.com/watch?v=wspUsA32Z_8&t=795) .
  
  **Make sure to type the closing ****}**** bracket manually in order to trigger the evaluation of the expression inside.**
  
  ## Date calculation
  Expressions used for date calculation are useful for:
  Setting start dates using the Start at option in the Task Details: [Creating tasks & to-do lists, and configuring task options#Set a "Start Time" (aka "Due Date")](/help/tasks_and_todos_create_list#Set_a__Start_Time__(aka__Due_Date_)) ;
  Creating daily jots - past or future: [What is a "Jot" and how is it different from a "Note"?#🗓️ Creating future daily Jots](/help/jots#____Creating_future_daily_Jots) ; 
  Simply creating time stamps in your notes, wherever they are needed.
   
  Relative date calculation:
  ```
  {Today}{Tomorrow}{Yesterday}
  ```
  
  [Absolute dates﻿](https://www.amplenote.com/help/keyboard_shortcuts_and_markdown_syntax_examples) :
  ```
  {Monday}{The weekend}{September}{October 31st}{Oct 31}{End of March}{Beginning of April}{First monday of September}{Last friday of December}
  ```
  
  [Past and future dates﻿](https://www.amplenote.com/help/keyboard_shortcuts_and_markdown_syntax_examples) :
  ```
  {Next monday}{Last week}{Next year}{In 14 days}{A month ago}{End of next month}
  ```
  
  ## Time calculation
  [Time calculation﻿](https://www.amplenote.com/help/keyboard_shortcuts_and_markdown_syntax_examples) :
  ```
  {Now}{10 minutes ago}{In three hours}{9 pm}{21:30}
  ```
  
  Date and time calculation:
  ```
  {Today at 8pm}{Tomorrow at 10:45}{Tuesday 22:00}{Mar 12 8am}
  ```
  
  ## Date calculation: defining recurring rules
  The following expressions don't work when used inside curly brackets { } like the rest of the examples on this page. Instead, these expressions are meant to be used for setting recurrence rules for your tasks using the Start at field in the Task Details: [Creating tasks & to-do lists, and configuring task options#Repeat on fixed schedule](/help/tasks_and_todos_create_list#Repeat_on_fixed_schedule) .
  
  ```
  Every 2 daysEvery 3 weeksEvery 3 weeks on FridayEvery week on Monday and ThursdayEvery weekdayEvery 2 monthsEvery 3 months on the 21stEvery month on the 20th and 25thEvery month on the last FridayEvery month on the last dayEvery 2 months on the first MondayEvery 2 years
  ```
  
  
  # Math calculations
  E.g., [2﻿](https://www.amplenote.com/help/keyboard_shortcuts_and_markdown_syntax_examples)  [314.15﻿](https://www.amplenote.com/help/keyboard_shortcuts_and_markdown_syntax_examples)  [0.66]()  
  ```
  {1+1}{pi*10**2}{(1+1)*(12/36)}
  ```
processedNoteContent: ---
  title: Calculation & evaluation operator: dates, time,...
  tags: 
  ---
  Amplenote offers the ability to calculate relative dates and mathematical formulas by using surrounding your formula in curly braces, for example if you enter {1+1}, we will calculate the result and store the formula in a [Rich Footnote](/help/rich_footnotes_content_preview)
    like this:  [2]()
  Following are the types of calculations Amplenote can make, and how those can be used for more effective backlinking. 
  Date & time calculations
  Date calculation is often combined with double-bracket syntax to link to notes named for future days, which will show up in Jots mode when that day arrives. You can see this in action in [Shu Omi's video at the 13:15 mark](https://www.youtube.com)`
   . Make sure to type the closing } bracket manually in order to trigger the evaluation of the expression inside.
  
  Date calculation
  Expressions used for date calculation are useful for:
  Setting start dates using the Start at option in the Task Details: [Creating tasks & to-do lists, and configuring task options#Set a "Start Time" (aka "Due Date")](/help/tasks_and_todos_create_list#Set_a__Start_Time__(aka__Due_Date_))
   ;
  Creating daily jots - past or future: [What is a "Jot" and how is it different from a "Note"?#🗓️ Creating future daily Jots](/help/jots#____Creating_future_daily_Jots)
   ;
  Simply creating time stamps in your notes, wherever they are needed. Relative date calculation: {Today}{Tomorrow}{Yesterday}
  [Absolute dates﻿](https://www.amplenote.com)`
   : {Monday}{The weekend}{September}{October 31st}{Oct 31}{End of March}{Beginning of April}{First monday of September}{Last friday of December}
  [Past and future dates﻿](https://www.amplenote.com)`
   : {Next monday}{Last week}{Next year}{In 14 days}{A month ago}{End of next month}
  
  Time calculation
  [Time calculation﻿](https://www.amplenote.com)`
   : {Now}{10 minutes ago}{In three hours}{9 pm}{21:30}
  Date and time calculation: {Today at 8pm}{Tomorrow at 10:45}{Tuesday 22:00}{Mar 12 8am}
  
  Date calculation: defining recurring rules
  The following expressions don't work when used inside curly brackets { } like the rest of the examples on this page. Instead, these expressions are meant to be used for setting recurrence rules for your tasks using the Start at field in the Task Details: [Creating tasks & to-do lists, and configuring task options#Repeat on fixed schedule](/help/tasks_and_todos_create_list#Repeat_on_fixed_schedule)
   . Every 2 daysEvery 3 weeksEvery 3 weeks on FridayEvery week on Monday and ThursdayEvery weekdayEvery 2 monthsEvery 3 months on the 21stEvery month on the 20th and 25thEvery month on the last FridayEvery month on the last dayEvery 2 months on the first MondayEvery 2 years
  
  Math calculations
  E.g., [2﻿](https://www.amplenote.com)`
    [314.15﻿](https://www.amplenote.com)`
    [0.66]()
  {1+1}{pi*10**2}{(1+1)*(12/36)}
noteTitle: Calculation & evaluation operator: dates, time, math, and table of contents via {}