Actually, 12:00 AM and 12:00 PM are mambiguous, NIST says not to use them and different sources define them differently.
-- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Discussion List <[email protected]> on behalf of Paul Gilmartin <[email protected]> Sent: Wednesday, September 23, 2020 8:56 AM To: [email protected] Subject: Re: BOF on COBOL and the systems programmer at SHARE On Wed, 23 Sep 2020 12:12:09 +0000, Billy Ashton wrote: >And in that "special" US format, I am surprised at how many people think >12:00 AM is noon instead of midnight...I can see how that is much >clearer! > Actually, noon is 12:00M. (John M.:) >>>. . . >>> I was forced to change it to the "US standard" of mm/dd/yy hh:ms:ss xM >>> (x==A or P) because nobody understood that format and it was too difficult >>> for them to understand. This was IT internal only. > Should we try dating our checks in ISO 8601? https://secure-web.cisco.com/1Hy-5NaQlpjRt9YM1i7qhVF_JctcW8Tz3xKuU-RCWLRQiXgnOtn9rDbeNkvHbTsI6ucRqFPoqrtUzOTOFofIuhMHoc582XeyDZT3YVcd2nUbdChX3OLBlMy8TeTdtMAIuPC3LyGlX042Zw28FGFkl84VIL1SZ48VKAgsLEs37bM0taAUghmOJtQ1QtXoDlRT3-xQQsvsKR-5VTTuh4XImTltgN0VmqaERSR9QwALFC9kJFxVrRXz0kP01-e0CyoSN323dSep0Ob_VvAwd-7oMPpiqIJsUVZJf3FPNwRtHXpr8UOd7RZBSLJLIRXHg5kG09Sdh3iCj4uUiKNR_Y2cCzcFT_ZLSO-seyO6VU_SNcB7YiHQPA1Q6Mf8Ne1nIT8yLxtSA_WTjcsHcMRaB2i_wvZgLbAT8rX7baSBgvEnXbp0XoXjbVHeQf_eSPHaE0bvTEWf4Opntad82HxptqpO38w/https%3A%2F%2Fxkcd.com%2F1179%2F Once, in the week before the DST boundary, I received an invitation to a meeting the week after. It specified both local and GMT. They disagreed by one hour. I submitted a trouble ticket. WAD: Generated by a Microsoft utility; not amenable to change. And the format was something like: "05:30PM GMT". Leading zero + AM/PM notation + GMT? I needed to read it several times. What notation does your operator's console display? I keep my computer, phone, and wristwatch displaying 24-hour. But I can't train myself not to mentally convert to PM. Nor to think in SI. Joke; in a builders' supply store: "I'd like to buy about fifty feet of plastic pipe." "We deal in metric units now." (after some mental arithmetic) "OK, then, fifteen meters." "Do you want 1/2" or 3/4"?" -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
