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Airflow UI incorrectly interprets some cron expressions like 0 0 */1 * 5 #54482

Closed
#54644
Closed
Airflow UI incorrectly interprets some cron expressions like 0 0 */1 * 5#54482
#54644
Assignees
shreyaskj-0710
Labels
affected_version:3.0Issues Reported for 3.0area:UIRelated to UI/UX. For Frontend Developers.good first issuekind:bugThis is a clearly a bug

Description

@RNHTTR
RNHTTR
opened on Aug 13, 2025

Apache Airflow version

3.0.4

If "Other Airflow 2 version" selected, which one?

2.11

What happened?

The cron expression * * */1 * 5 is reported in Airflow as "Every minute, only on Friday", when in reality the dag runs every day.

Image

Per the cron manpage:

Commands are executed by cron(8) when the 'minute', 'hour', and 'month of the year' fields match the current time, and at least one of the two 'day' fields ('day of month', or 'day of week') match the current time (see "Note" below).

That is, since the day-of-month field and day-of-week fields are both populated and cron interprets these fields as OR, this dag runs every minute of every day, rather than every minute only on Fridays.

What you think should happen instead?

The UI should say that a dag with the schedule * * */1 * 5 runs every minute, or a dag with the schedule 0 0 */1 * 5 runs every day at midnight instead of saying midnight on Friday.

How to reproduce

Create a dag whose schedule is "* * */1 * 5". Hover over the schedule widget in the UI.

Operating System

n/a

Versions of Apache Airflow Providers

No response

Deployment

Official Apache Airflow Helm Chart

Deployment details

No response

Anything else?

No response

Are you willing to submit PR?

  • Yes I am willing to submit a PR!

Code of Conduct

Metadata

Metadata

Assignees

Labels

affected_version:3.0Issues Reported for 3.0area:UIRelated to UI/UX. For Frontend Developers.good first issuekind:bugThis is a clearly a bug

Type

No type

Projects

No projects

    Milestone

    No milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions

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Airflow UI incorrectly interprets some cron expressions like `0 0 */1 * 5` · Issue #54482 · apache/airflow · GitHub
    Skip to content
    Airflow UI incorrectly interprets some cron expressions like 0 0 */1 * 5 #54482
    Closed
    #54644
    Closed
    Airflow UI incorrectly interprets some cron expressions like 0 0 */1 * 5#54482
    #54644
    Assignees
    shreyaskj-0710
    Labels
    affected_version:3.0Issues Reported for 3.0area:UIRelated to UI/UX. For Frontend Developers.good first issuekind:bugThis is a clearly a bug
    Description
    @RNHTTR
    RNHTTR
    opened on Aug 13, 2025
    Apache Airflow version
    3.0.4
    If "Other Airflow 2 version" selected, which one?
    2.11
    What happened?
    The cron expression * * */1 * 5 is reported in Airflow as "Every minute, only on Friday", when in reality the dag runs every day.
    Image
    Per the cron manpage:
    Commands are executed by cron(8) when the 'minute', 'hour', and 'month of the year' fields match the current time, and at least one of the two 'day' fields ('day of month', or 'day of week') match the current time (see "Note" below).
    That is, since the day-of-month field and day-of-week fields are both populated and cron interprets these fields as OR, this dag runs every minute of every day, rather than every minute only on Fridays.
    What you think should happen instead?
    The UI should say that a dag with the schedule * * */1 * 5 runs every minute, or a dag with the schedule 0 0 */1 * 5 runs every day at midnight instead of saying midnight on Friday.
    How to reproduce
    Create a dag whose schedule is "* * */1 * 5". Hover over the schedule widget in the UI.
    Operating System
    n/a
    Versions of Apache Airflow Providers
    No response
    Deployment
    Official Apache Airflow Helm Chart
    Deployment details
    No response
    Anything else?
    No response
    Are you willing to submit PR?
    •  Yes I am willing to submit a PR!
    Code of Conduct
    Metadata
    Metadata
    Assignees
    Labels
    affected_version:3.0Issues Reported for 3.0area:UIRelated to UI/UX. For Frontend Developers.good first issuekind:bugThis is a clearly a bug
    Type
    No type
    Projects
    No projects
      Milestone
      No milestone
      Relationships
      None yet
      Development
      No branches or pull requests
      Issue actions
      
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Airflow UI incorrectly interprets some cron expressions like `0 0 */1 * 5` · Issue #54482 · apache/airflow · GitHub
      Skip to content
      Airflow UI incorrectly interprets some cron expressions like 0 0 */1 * 5 #54482
      Closed
      #54644
      Closed
      Airflow UI incorrectly interprets some cron expressions like 0 0 */1 * 5#54482
      #54644
      Assignees
      shreyaskj-0710
      Labels
      affected_version:3.0Issues Reported for 3.0area:UIRelated to UI/UX. For Frontend Developers.good first issuekind:bugThis is a clearly a bug
      Description
      @RNHTTR
      RNHTTR
      opened on Aug 13, 2025
      Apache Airflow version
      3.0.4
      If "Other Airflow 2 version" selected, which one?
      2.11
      What happened?
      The cron expression * * */1 * 5 is reported in Airflow as "Every minute, only on Friday", when in reality the dag runs every day.
      Image
      Per the cron manpage:
      Commands are executed by cron(8) when the 'minute', 'hour', and 'month of the year' fields match the current time, and at least one of the two 'day' fields ('day of month', or 'day of week') match the current time (see "Note" below).
      That is, since the day-of-month field and day-of-week fields are both populated and cron interprets these fields as OR, this dag runs every minute of every day, rather than every minute only on Fridays.
      What you think should happen instead?
      The UI should say that a dag with the schedule * * */1 * 5 runs every minute, or a dag with the schedule 0 0 */1 * 5 runs every day at midnight instead of saying midnight on Friday.
      How to reproduce
      Create a dag whose schedule is "* * */1 * 5". Hover over the schedule widget in the UI.
      Operating System
      n/a
      Versions of Apache Airflow Providers
      No response
      Deployment
      Official Apache Airflow Helm Chart
      Deployment details
      No response
      Anything else?
      No response
      Are you willing to submit PR?
      •  Yes I am willing to submit a PR!
      Code of Conduct
      Metadata
      Metadata
      Assignees
      Labels
      affected_version:3.0Issues Reported for 3.0area:UIRelated to UI/UX. For Frontend Developers.good first issuekind:bugThis is a clearly a bug
      Type
      No type
      Projects
      No projects
        Milestone
        No milestone
        Relationships
        None yet
        Development
        No branches or pull requests
        Issue actions
        
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var __m = "*";
var __re = new RegExp('^' + ".*" + '
Airflow UI incorrectly interprets some cron expressions like `0 0 */1 * 5` · Issue #54482 · apache/airflow · GitHub
        Skip to content
        Airflow UI incorrectly interprets some cron expressions like 0 0 */1 * 5 #54482
        Closed
        #54644
        Closed
        Airflow UI incorrectly interprets some cron expressions like 0 0 */1 * 5#54482
        #54644
        Assignees
        shreyaskj-0710
        Labels
        affected_version:3.0Issues Reported for 3.0area:UIRelated to UI/UX. For Frontend Developers.good first issuekind:bugThis is a clearly a bug
        Description
        @RNHTTR
        RNHTTR
        opened on Aug 13, 2025
        Apache Airflow version
        3.0.4
        If "Other Airflow 2 version" selected, which one?
        2.11
        What happened?
        The cron expression * * */1 * 5 is reported in Airflow as "Every minute, only on Friday", when in reality the dag runs every day.
        Image
        Per the cron manpage:
        Commands are executed by cron(8) when the 'minute', 'hour', and 'month of the year' fields match the current time, and at least one of the two 'day' fields ('day of month', or 'day of week') match the current time (see "Note" below).
        That is, since the day-of-month field and day-of-week fields are both populated and cron interprets these fields as OR, this dag runs every minute of every day, rather than every minute only on Fridays.
        What you think should happen instead?
        The UI should say that a dag with the schedule * * */1 * 5 runs every minute, or a dag with the schedule 0 0 */1 * 5 runs every day at midnight instead of saying midnight on Friday.
        How to reproduce
        Create a dag whose schedule is "* * */1 * 5". Hover over the schedule widget in the UI.
        Operating System
        n/a
        Versions of Apache Airflow Providers
        No response
        Deployment
        Official Apache Airflow Helm Chart
        Deployment details
        No response
        Anything else?
        No response
        Are you willing to submit PR?
        •  Yes I am willing to submit a PR!
        Code of Conduct
        Metadata
        Metadata
        Assignees
        Labels
        affected_version:3.0Issues Reported for 3.0area:UIRelated to UI/UX. For Frontend Developers.good first issuekind:bugThis is a clearly a bug
        Type
        No type
        Projects
        No projects
          Milestone
          No milestone
          Relationships
          None yet
          Development
          No branches or pull requests
          Issue actions
          
, 'i');
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var __re = new RegExp('^' + "youtube\\.com" + '
Airflow UI incorrectly interprets some cron expressions like `0 0 */1 * 5` · Issue #54482 · apache/airflow · GitHub
          Skip to content
          Airflow UI incorrectly interprets some cron expressions like 0 0 */1 * 5 #54482
          Closed
          #54644
          Closed
          Airflow UI incorrectly interprets some cron expressions like 0 0 */1 * 5#54482
          #54644
          Assignees
          shreyaskj-0710
          Labels
          affected_version:3.0Issues Reported for 3.0area:UIRelated to UI/UX. For Frontend Developers.good first issuekind:bugThis is a clearly a bug
          Description
          @RNHTTR
          RNHTTR
          opened on Aug 13, 2025
          Apache Airflow version
          3.0.4
          If "Other Airflow 2 version" selected, which one?
          2.11
          What happened?
          The cron expression * * */1 * 5 is reported in Airflow as "Every minute, only on Friday", when in reality the dag runs every day.
          Image
          Per the cron manpage:
          Commands are executed by cron(8) when the 'minute', 'hour', and 'month of the year' fields match the current time, and at least one of the two 'day' fields ('day of month', or 'day of week') match the current time (see "Note" below).
          That is, since the day-of-month field and day-of-week fields are both populated and cron interprets these fields as OR, this dag runs every minute of every day, rather than every minute only on Fridays.
          What you think should happen instead?
          The UI should say that a dag with the schedule * * */1 * 5 runs every minute, or a dag with the schedule 0 0 */1 * 5 runs every day at midnight instead of saying midnight on Friday.
          How to reproduce
          Create a dag whose schedule is "* * */1 * 5". Hover over the schedule widget in the UI.
          Operating System
          n/a
          Versions of Apache Airflow Providers
          No response
          Deployment
          Official Apache Airflow Helm Chart
          Deployment details
          No response
          Anything else?
          No response
          Are you willing to submit PR?
          •  Yes I am willing to submit a PR!
          Code of Conduct
          Metadata
          Metadata
          Assignees
          Labels
          affected_version:3.0Issues Reported for 3.0area:UIRelated to UI/UX. For Frontend Developers.good first issuekind:bugThis is a clearly a bug
          Type
          No type
          Projects
          No projects
            Milestone
            No milestone
            Relationships
            None yet
            Development
            No branches or pull requests
            Issue actions
            
, 'i');
if (__m === '*' || __re.test(location.href)) {
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try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Airflow UI incorrectly interprets some cron expressions like `0 0 */1 * 5` · Issue #54482 · apache/airflow · GitHub
            Skip to content
            Airflow UI incorrectly interprets some cron expressions like 0 0 */1 * 5 #54482
            Closed
            #54644
            Closed
            Airflow UI incorrectly interprets some cron expressions like 0 0 */1 * 5#54482
            #54644
            Assignees
            shreyaskj-0710
            Labels
            affected_version:3.0Issues Reported for 3.0area:UIRelated to UI/UX. For Frontend Developers.good first issuekind:bugThis is a clearly a bug
            Description
            @RNHTTR
            RNHTTR
            opened on Aug 13, 2025
            Apache Airflow version
            3.0.4
            If "Other Airflow 2 version" selected, which one?
            2.11
            What happened?
            The cron expression * * */1 * 5 is reported in Airflow as "Every minute, only on Friday", when in reality the dag runs every day.
            Image
            Per the cron manpage:
            Commands are executed by cron(8) when the 'minute', 'hour', and 'month of the year' fields match the current time, and at least one of the two 'day' fields ('day of month', or 'day of week') match the current time (see "Note" below).
            That is, since the day-of-month field and day-of-week fields are both populated and cron interprets these fields as OR, this dag runs every minute of every day, rather than every minute only on Fridays.
            What you think should happen instead?
            The UI should say that a dag with the schedule * * */1 * 5 runs every minute, or a dag with the schedule 0 0 */1 * 5 runs every day at midnight instead of saying midnight on Friday.
            How to reproduce
            Create a dag whose schedule is "* * */1 * 5". Hover over the schedule widget in the UI.
            Operating System
            n/a
            Versions of Apache Airflow Providers
            No response
            Deployment
            Official Apache Airflow Helm Chart
            Deployment details
            No response
            Anything else?
            No response
            Are you willing to submit PR?
            •  Yes I am willing to submit a PR!
            Code of Conduct
            Metadata
            Metadata
            Assignees
            Labels
            affected_version:3.0Issues Reported for 3.0area:UIRelated to UI/UX. For Frontend Developers.good first issuekind:bugThis is a clearly a bug
            Type
            No type
            Projects
            No projects
              Milestone
              No milestone
              Relationships
              None yet
              Development
              No branches or pull requests
              Issue actions
              
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try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Airflow UI incorrectly interprets some cron expressions like `0 0 */1 * 5` · Issue #54482 · apache/airflow · GitHub
              Skip to content
              Airflow UI incorrectly interprets some cron expressions like 0 0 */1 * 5 #54482
              Closed
              #54644
              Closed
              Airflow UI incorrectly interprets some cron expressions like 0 0 */1 * 5#54482
              #54644
              Assignees
              shreyaskj-0710
              Labels
              affected_version:3.0Issues Reported for 3.0area:UIRelated to UI/UX. For Frontend Developers.good first issuekind:bugThis is a clearly a bug
              Description
              @RNHTTR
              RNHTTR
              opened on Aug 13, 2025
              Apache Airflow version
              3.0.4
              If "Other Airflow 2 version" selected, which one?
              2.11
              What happened?
              The cron expression * * */1 * 5 is reported in Airflow as "Every minute, only on Friday", when in reality the dag runs every day.
              Image
              Per the cron manpage:
              Commands are executed by cron(8) when the 'minute', 'hour', and 'month of the year' fields match the current time, and at least one of the two 'day' fields ('day of month', or 'day of week') match the current time (see "Note" below).
              That is, since the day-of-month field and day-of-week fields are both populated and cron interprets these fields as OR, this dag runs every minute of every day, rather than every minute only on Fridays.
              What you think should happen instead?
              The UI should say that a dag with the schedule * * */1 * 5 runs every minute, or a dag with the schedule 0 0 */1 * 5 runs every day at midnight instead of saying midnight on Friday.
              How to reproduce
              Create a dag whose schedule is "* * */1 * 5". Hover over the schedule widget in the UI.
              Operating System
              n/a
              Versions of Apache Airflow Providers
              No response
              Deployment
              Official Apache Airflow Helm Chart
              Deployment details
              No response
              Anything else?
              No response
              Are you willing to submit PR?
              •  Yes I am willing to submit a PR!
              Code of Conduct
              Metadata
              Metadata
              Assignees
              Labels
              affected_version:3.0Issues Reported for 3.0area:UIRelated to UI/UX. For Frontend Developers.good first issuekind:bugThis is a clearly a bug
              Type
              No type
              Projects
              No projects
                Milestone
                No milestone
                Relationships
                None yet
                Development
                No branches or pull requests
                Issue actions
                
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})();
Airflow UI incorrectly interprets some cron expressions like `0 0 */1 * 5` · Issue #54482 · apache/airflow · GitHub
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                Airflow UI incorrectly interprets some cron expressions like 0 0 */1 * 5 #54482
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                #54644
                Closed
                Airflow UI incorrectly interprets some cron expressions like 0 0 */1 * 5#54482
                #54644
                Assignees
                shreyaskj-0710
                Labels
                affected_version:3.0Issues Reported for 3.0area:UIRelated to UI/UX. For Frontend Developers.good first issuekind:bugThis is a clearly a bug
                Description
                @RNHTTR
                RNHTTR
                opened on Aug 13, 2025
                Apache Airflow version
                3.0.4
                If "Other Airflow 2 version" selected, which one?
                2.11
                What happened?
                The cron expression * * */1 * 5 is reported in Airflow as "Every minute, only on Friday", when in reality the dag runs every day.
                Image
                Per the cron manpage:
                Commands are executed by cron(8) when the 'minute', 'hour', and 'month of the year' fields match the current time, and at least one of the two 'day' fields ('day of month', or 'day of week') match the current time (see "Note" below).
                That is, since the day-of-month field and day-of-week fields are both populated and cron interprets these fields as OR, this dag runs every minute of every day, rather than every minute only on Fridays.
                What you think should happen instead?
                The UI should say that a dag with the schedule * * */1 * 5 runs every minute, or a dag with the schedule 0 0 */1 * 5 runs every day at midnight instead of saying midnight on Friday.
                How to reproduce
                Create a dag whose schedule is "* * */1 * 5". Hover over the schedule widget in the UI.
                Operating System
                n/a
                Versions of Apache Airflow Providers
                No response
                Deployment
                Official Apache Airflow Helm Chart
                Deployment details
                No response
                Anything else?
                No response
                Are you willing to submit PR?
                •  Yes I am willing to submit a PR!
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                affected_version:3.0Issues Reported for 3.0area:UIRelated to UI/UX. For Frontend Developers.good first issuekind:bugThis is a clearly a bug
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