Dates and Calendar nodes

Dates in Tana give you the power to connect all your data in relation to time, and to resurface data that is the most important to you now.

Overview

There are two important ways that Tana treats date information. Date objects are a concept of time that you can link to, meanwhile a calendar node is a place in the graph you can write on that is related to a date. The two are intertwined but not the same.

Date objects can be mentioned on any node using @-mention. They have flexible date granularities so you can be as broad or specific as you want to be, allowing you to say "meet Henry at 2:15pm tomorrow", as well as "yearly goal for 2024".

Calendar nodes are what drive your daily page. They are automatically set up for days, weeks, months, and years, and allow you to take notes and set up searches that capture items in those date intervals.

Basics

Date objects

Dates in Tana keep everything connected to time in your graph. To reference date objects in Tana, use @ and write out the date/time you want in natural language. Try typing @today in Tana, and you'll see it bring up today's date.
Tana has a date field type so you can add date information to any node. You can use just the field under a node, or add them via supertag templates.
Date objects allow for different date granularities. Try typing @November, @Wednesday last week, or @5pm next Saturday. Once you have a date object, you can click it to bring up the date picker.
A negative year is parsed as BC/BCE. To know what it is in astronomical years, add one. Example: input "-101" = "101 BC" = "-100" in astronomical years

Calendar nodes

Calendar nodes are the day/week/month/year nodes on the root of a workspace. They're automatically generated for your private workspace, and can be generated for other workspaces too. They are connected to the dates they represent, so you can take notes connected to that date granularity, and it also retrieves references based on that.
The Today page is a calendar node. They exist within week nodes, that exists within year nodes. You can see all the calendar nodes in Tana by going to your Home page and expanding the Calendar.
The supertag on a calendar node can be customized. Create your own time-based templates for things like reviews, reminders, and logs. You don't need a supertag on your calendar nodes (they function just as well without them) but they're handy for making daily/weekly/monthly/yearly templates. Use the command "create default day/week/month/year tag" on the calendar node to create them.

Tana has Month nodes. Months do not appear as nodes under the Calendar node like Week/Day do, so you must navigate to months via the Today page, or from a date object with month granularity.
Use search nodes with field values PARENT/GRANDPARENT on any calendar node. This allows you to retrieve all nodes within a time span ie. a PARENT search on month will find all nodes with a specific date within that month

Documentation

Date objects

To add a date on a node

Using mouse: On an empty node, press the placeholder node (+) > Insert date
Using keyboard: Type @ and write out the date or in natural language what you want. Examples: "today at 5pm", "Nov 15", "yesterday", "last month", "in two weeks".

To add a date in a date field

To create a date field, see Date fields
Date fields show a small calendar icon on the right.
On an empty field, press the small calendar icon to the right, or hit space to insert today's date and bring up the date picker.

To open the date picker

Using mouse: On any date object, click on it, or right-click > Show Calendar
Using keyboard: Select the date object and hit Enter

To change an existing date/time and granularity

Via date picker: Click on the date object to bring up the date picker and click on a date to change it. For larger granularity, clear the selected date options by pressing the (x) in the corners. For smaller granularity select/input the finer granularity you want.
- Change granularity: Arrow keys + Spacebar to add/change/remove granularities. Hit Enter/Esc to commit the changes.
- Week granularity: Select a week as a date by clicking on the weeks to the left.
Using keyboard shortcuts on a selected date object: When a date object is selected, you can use these shortcuts to quickly change date and time:
- Go forward in time = key, Go back in time = Shift+key
- Keys
  - 5 minutes: J
  - 1 hour: H
  - 1 day: D
  - 1 week: W
  - 1 month: M
  - 1 quarter: Q
  - 1 year: Y
- Increment by one granularity: +/- keys.
Using command line on a selected date object: Run command line (Cmd/Ctrl+K) > Change date.
- This command gives you the following options:
  - Switch granularities (day/week/month/year)
  - Add/remove time
  - Next minute/5min/hour/day/week/month/quarter/year
  - Previous minute/5min/hour/day/week/month/quarter/year
  - Change increment/decrement

To make a date range

In the date picker: add an end date using add end. Use remove end to remove the range.
In @-mention: Write @[date] to [date]. Example: @Nov 21 to Nov 30
In command node: see Insert relative date

Calendar nodes

To reach your private day node/Today

Using mouse: Use the Today button on the sidebar, or the Today button on every calendar node
Using keyboard: Ctrl+Shift+D
In the sidebar, Alt+click on your private workspace header, or expand the workspace and click on the calendar node.

To reach the day node of another workspace

In the sidebar, Alt+click on the workspace header, or expand the workspace and click on the calendar node.
In your private day node, use the dropdown Switch calendars

To go to the calendar node from any date object

Alt+click the date object to navigate to that corresponding calendar node
Right-click > Go to calendar date node/Open calendar date node in new panel

To go to calendar nodes of higher level of granularity than the day node

From a date object: If the date object references a higher level date granularity like Week 45, or November 2023, you can Alt+click to navigate to that corresponding calendar node
From a day node: The breadcrumbs at the top of calendar nodes show the different granularities. You can click to navigate to them. ✨NEW You can also right-click the Today button under the title to navigate to this week/month/year.

To traverse between previous/next calendar node

Using mouse: use the < / > buttons right under the node title
Using keyboard: use Ctrl+[ / ] to traverse to past/future calendar nodes of that granularity.

To create calendar nodes for other workspaces

Unlike your private workspace, new workspaces do not come with default calendar nodes.
To create them, go to any existing calendar node like any one in you private workspace, then change workspace to a different one.
To add default tags, right-click on any calendar node or click on the ellipsis button to the right to "create default day/week/month/year tag".

The reference section in calendar nodes

At the bottom of each node is a reference section. For calendar nodes, it will collect all nodes in the workspace that mention that particular date granularity, either mentioned in name or in a field. Example: week nodes will capture any node that have date objects using the Week WW granularity, month nodes will capture November YYYY granularity and so on.

Linking to calendar nodes

Date searches

There are many search operators that are specifically designed to handle date queries, as well as general purpose numeric ones that work with date queries as well.

Search operators

LT/GT

LT/GT is the only field operator in this list. Find nodes with date that are Less Than/Greater Than a particular date. Less = earlier, greater = later.

To use LT/GT, insert a date field and the value to compare to. Example: To find all appointments you've had up until a certain date, you can build a search like this:

>LT: >Appt date: [Date object]

If the value you access through PARENT or PARENT.field is a date value, you can increment/decrement it using +/-. For example, to find all the tasks due during the next three days on a daily node, write a search like this:

>GT: >Due Date: PARENT
>LT: >Due Date: PARENT+3

Date object as string match

Use a date object to find any node that mentions that date as a date object.

FOR DATE YYYY-MM-DD

A keyword operator that matches any node that mentions that date as a date object.

Insert a date in the YYYY-MM-DD format, like this: FOR DATE 2023-11-21

IS CALENDAR NODE

A keyword operator that matches with calendar nodes.

Is most useful for excluding from searches:

>NOT: IS CALENDAR NODE

ON DAY NODE

A keyword operator that matches children of any #day node

...(NUMBER) DAYS

Several search operators will look for nodes with date values within (NUMBER) of days:

DONE LAST (N) DAYS
CREATED LAST (N) DAYS
EDITED LAST (N) DAYS

`OVERDUE` + "Due date" field (legacy)

The search operator OVERDUE only works when used in tandem with system field Due date.

We discourage using Due date because system fields in general are very inflexible. They cannot be configured and customized like other user-created fields with default hide state, default value, auto-initialization and so on.

We can now replicate the functionality of OVERDUE for any date field using LT/GT.

For more date-related searches, check this FAQ out.

Field values

PARENT/GRANDPARENT

PARENT/GRANDPARENT refers to the immediate ancestors in the outline hierarchy relative to the search node.

If the parent/grandparent is a calendar node, you can add these search operators as a date field value. This will replace the field value with the date represented by the calendar node.

Example: If you create search nodes on your day node, you can use PARENT/GRANDPARENT to fetch all #tasks that are due today (PARENT), or this week (GRANDPARENT)

You can use PARENT+3/PARENT-3 to find future/past dates relative to the target. See LT/GT for more.

If a node has a date field, you can use PARENT.field to target that field value for date searches. See LT/GT for more.

FOR RELATIVE DATE [term]

Add this in the date field value, and it will be replaced with a date that is relative to the current date.

Compare PARENT/GRANDPARENT with FOR RELATIVE DATE, the former let's you look back at what you wrote yesterday relative to the calendar node you're on, whereas the latter shows results relative to today's values (which will change every day), and can be placed anywhere in the graph (not just nested as a child/grandchild of a calendar node).

Present time: Today, this week, this month, this year
Past: Yesterday, last week, last month, last year
Future: Tomorrow, next week, next month, next year

Command nodes with date function

Insert relative date

Accepts the following parameters

Relative date string (required)
Reference date
Date/time granularity
Set only start or end of date
Target node

Suggested uses:

time tracking setups (set present date/time)
scheduling commands (postpone start date by +5 days)
extract start and end of a ranged date object into two separate fields
combine two separate fields (for example from imported data) into a ranged date object

Unfortunately we don't have a search expression that can be used in a node filter for dates that have a start/end or not.

See Command nodes > Insert relative date for more.

Auto-initialization of date fields

Date fields used in supertags can be made to auto-populate a date upon use. Use a date field in the supertag config, and the following auto-initialize options will be available:

to current date: inserts today's date
to date of ancestor day node: inserts the date of an ancestor journal node
to value from ancestor with this field: Get the field value from an identical field on a node nested above. For example you could have a #quote tag with an Author field, and it could automatically initialize with the value from the Author field of the #book that it is nested underneath

Default date/time system fields

Every node stores a some default system fields that record date/time information based on certain events. This information are not editable, but can be queried.

Created time: Date/time a node was created
Last modified time: Date/time a node was last edited
Done time: Date/time a node was registered "done". Has to be manual toggle, doesn't work with done state mapping/kanban-style setups.
Date from calendar node: Calendar node that a node is a descendant of.

Date/Time settings

Time zones

Tana has a bare-bones implementation of time zones, which was necessary because when people are collaborating in Tana across timezones and search for "what happened today", they're not interested in only what happened "today" in their own time zone, they want to know what happened in "today"s everywhere, possibly in every timezone.
Timezones are set per workspace, stored in Settings.
Timezones uses the tz format. It can be changed manually by using one of the names from this list (use larger cities just to be sure): https://en.wikipedia.org/wiki/List_of_tz_database_time_zones

Time format

Time format settings are per user, stored in Settings
Dictates how Tana displays time. Choose between:
- 12H
- 24H
- Auto (based on your local settings)

First day of the week

First day of the week setting are per user, stored in Settings
Allows you to choose whether to start your week on Sunday or Monday.
Currently the daily nodes in the calendar hierarchy are all organized starting Monday though, this only affects what you see in the various date pickers and in the calendar view.
You can also set this using command line > Set start of week to...

The calendar view

See any list of nodes plotted in a calendar.

By default you can use their system fields "Created at"/"Edited at", or "Done time" if it has checked status.
Otherwise you can use any date field on the node that you have created (like Due date, Launch date, Publish date etc).
Choose to plot nodes using one or more specific fields with date values.

For more, see Views > Table view

Examples

See all captured items from a day/week/month

Create a search node under a day/week/month to see all captured items from that period.

Grab a reference to the Inbox and paste in the query builder
Add the system field Created date and make the field value PARENT
Your search node should look like this:
- Inbox (reference)
- >Created date::PARENT

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Related release notes

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improvedLINKS_TO search expression clause should now work on calendar nodes by treating it as a date. Talk about being friend-zoned... (2024 / wk 14)
fixedWe changed something, then some users said using Tab for inserting dates doesn't work anymore, so using Tab to insert your @-mention selection works (again?). Now, the question is: who picks up the Tab on the second date? (2024 / wk 14)
improvedClicking a date field now opens the date picker automatically (2024 / wk 9)
newNew buttons for date navigation on calendar nodes! Right-click on "Today" to navigate to this week/month/year. (2024 / wk 7)
newWe renamed Calendar to Daily Notes, and gave it a node icon. (2024 / wk 7)

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