December used to notate runway?

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I'm writing a report on runway quality and I've stumbled onto a weird qualifier in the data. I understand the Runway 17/35 indicates which direction the runway is facing based on magnetics.




RWY_ID 17/35 17/35 26-Aug 14/32 30-Dec 28-Oct 21-Mar 13/31




What does 21-March mean?






runways







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    Where did you come across this data? Context might help. Please Edit your question.
    – Michael Kjörling
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up vote
2
down vote

favorite












I'm writing a report on runway quality and I've stumbled onto a weird qualifier in the data. I understand the Runway 17/35 indicates which direction the runway is facing based on magnetics.




RWY_ID 17/35 17/35 26-Aug 14/32 30-Dec 28-Oct 21-Mar 13/31




What does 21-March mean?






runways







share|improve this question









New contributor




Ryan Estes is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.















  • 3




    Where did you come across this data? Context might help. Please Edit your question.
    – Michael Kjörling
    5 hours ago












up vote
2
down vote

favorite









up vote
2
down vote

favorite











I'm writing a report on runway quality and I've stumbled onto a weird qualifier in the data. I understand the Runway 17/35 indicates which direction the runway is facing based on magnetics.




RWY_ID 17/35 17/35 26-Aug 14/32 30-Dec 28-Oct 21-Mar 13/31




What does 21-March mean?






runways







share|improve this question









New contributor




Ryan Estes is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











I'm writing a report on runway quality and I've stumbled onto a weird qualifier in the data. I understand the Runway 17/35 indicates which direction the runway is facing based on magnetics.




RWY_ID 17/35 17/35 26-Aug 14/32 30-Dec 28-Oct 21-Mar 13/31




What does 21-March mean?






runways




runways






share|improve this question









New contributor




Ryan Estes is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











share|improve this question









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Ryan Estes is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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edited 4 hours ago









Jamiec♦

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  • 3




    Where did you come across this data? Context might help. Please Edit your question.
    – Michael Kjörling
    5 hours ago












  • 3




    Where did you come across this data? Context might help. Please Edit your question.
    – Michael Kjörling
    5 hours ago







3




3




Where did you come across this data? Context might help. Please Edit your question.
– Michael Kjörling
5 hours ago




Where did you come across this data? Context might help. Please Edit your question.
– Michael Kjörling
5 hours ago










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Very likely, whatever data source you're using has been mangled by Excel (or some other spreadsheet or data processing system that tries to convert everything that might be a date into a date format).



26-Aug is actually runway 26/08, 30-Dec is actually runway 30/12, etc. (See "How are runways numbered?")



Some computer system saw those numbers, assumed that they were dates, and presented them that way. The other runways aren't valid as dates, so it left them alone. It wouldn't be the first time that people used Excel without fully understanding its default date-parsing settings and thereby causing problems for people trying to use their data afterward.






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    1 Answer
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    1 Answer
    1






    active

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    up vote
    4
    down vote













    Very likely, whatever data source you're using has been mangled by Excel (or some other spreadsheet or data processing system that tries to convert everything that might be a date into a date format).



    26-Aug is actually runway 26/08, 30-Dec is actually runway 30/12, etc. (See "How are runways numbered?")



    Some computer system saw those numbers, assumed that they were dates, and presented them that way. The other runways aren't valid as dates, so it left them alone. It wouldn't be the first time that people used Excel without fully understanding its default date-parsing settings and thereby causing problems for people trying to use their data afterward.






    share|improve this answer








    New contributor




    Peter Cooper Jr. is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.





















      up vote
      4
      down vote













      Very likely, whatever data source you're using has been mangled by Excel (or some other spreadsheet or data processing system that tries to convert everything that might be a date into a date format).



      26-Aug is actually runway 26/08, 30-Dec is actually runway 30/12, etc. (See "How are runways numbered?")



      Some computer system saw those numbers, assumed that they were dates, and presented them that way. The other runways aren't valid as dates, so it left them alone. It wouldn't be the first time that people used Excel without fully understanding its default date-parsing settings and thereby causing problems for people trying to use their data afterward.






      share|improve this answer








      New contributor




      Peter Cooper Jr. is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.



















        up vote
        4
        down vote










        up vote
        4
        down vote









        Very likely, whatever data source you're using has been mangled by Excel (or some other spreadsheet or data processing system that tries to convert everything that might be a date into a date format).



        26-Aug is actually runway 26/08, 30-Dec is actually runway 30/12, etc. (See "How are runways numbered?")



        Some computer system saw those numbers, assumed that they were dates, and presented them that way. The other runways aren't valid as dates, so it left them alone. It wouldn't be the first time that people used Excel without fully understanding its default date-parsing settings and thereby causing problems for people trying to use their data afterward.






        share|improve this answer








        New contributor




        Peter Cooper Jr. is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
        Check out our Code of Conduct.









        Very likely, whatever data source you're using has been mangled by Excel (or some other spreadsheet or data processing system that tries to convert everything that might be a date into a date format).



        26-Aug is actually runway 26/08, 30-Dec is actually runway 30/12, etc. (See "How are runways numbered?")



        Some computer system saw those numbers, assumed that they were dates, and presented them that way. The other runways aren't valid as dates, so it left them alone. It wouldn't be the first time that people used Excel without fully understanding its default date-parsing settings and thereby causing problems for people trying to use their data afterward.







        share|improve this answer








        New contributor




        Peter Cooper Jr. is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
        Check out our Code of Conduct.









        share|improve this answer



        share|improve this answer






        New contributor




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        answered 1 hour ago









        Peter Cooper Jr.

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