Here "timer unit" refers to the low bit of the TOD clock, not to the OS 
constant known as a timer unit.

--
Shmuel (Seymour J.) Metz
http://mason.gmu.edu/~smetz3
עַם יִשְׂרָאֵל חַי
נֵ֣צַח יִשְׂרָאֵ֔ל לֹ֥א יְשַׁקֵּ֖ר



________________________________________
From: IBM Mainframe Discussion List on behalf of Rob Scott
Sent: Thursday, April 17, 2025 11:10 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: Day of week from a program


External Message: Use Caution


I have not tested this, however maybe something like :

(1) Grab the current STCK(E).

(2) Divide it by the number of timer units in 24hours to give number of days 
since STCK value was hex zeroes (1900/01/01)

(3) Divide that number by 7 (days in week) and get the remainder

(4) Jan 1st 1900 was Monday (remainder 0) - so you can assign Tuesday to 1, 
Wednesday to 2 etc etc

Leap seconds might come into play along the way

Rob Scott
Rocket Software

________________________________
From: IBM Mainframe Discussion List on behalf of Joseph Reichman
Sent: Thursday, April 17, 2025 3:42 PM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: Day of week from a program

EXTERNAL EMAIL





I would have to change it to assembler LE prog ok

Thanks

> On Apr 17, 2025, at 9:54 AM, salva <sa...@rczero.com> wrote:
>
> If you can call LE, CEEDATE & CEEDYWK can do the work.
>
> El jue, 17 abr 2025, 13:52, Joseph Reichman <
> 000005812645a43c-dmarc-requ...@listserv.ua.edu> escribió:
>
>> Hi
>>
>> Would anyone know if there is a way to get the day of week from any of the
>> date macros STCKCONV
>>
>> Thanks
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