You forget about stopping aging after 25 years :-)
Op 10 sep. 2015 15:34 schreef "James Rankin" <[email protected]>:

> Glorious....unfortunately, I shall be long dead before those 40 years are
> up, sadly
>
>
> -----Original Message-----
> From: [email protected] [mailto:
> [email protected]] On Behalf Of Melvin Backus
> Sent: 10 September 2015 14:10
> To: [email protected]
> Subject: RE: [NTSysADM] OT-ish: date calculation in Excel
>
> I read an article a couple of years ago which predicted that medical
> technology would be able to halt the effects of aging within 25 years, and
> would be able to reverse the effects within 40 years.  I'm personally
> counting on them being right.  Hey, if I've got to work, IT isn't the worst
> job I can think of. :)
>
>
> --
> There are 10 kinds of people in the world...
>          those who understand binary and those who don't.
>
> -----Original Message-----
> From: [email protected] [mailto:
> [email protected]] On Behalf Of Maglinger, Paul
> Sent: Thursday, September 10, 2015 9:06 AM
> To: [email protected]
> Subject: RE: [NTSysADM] OT-ish: date calculation in Excel
>
> I'm not sure about everyone else on this list, but I don't plan on being
> in IT quite that long.
>
> -----Original Message-----
> From: [email protected] [mailto:
> [email protected]] On Behalf Of Freddy Grande
> Sent: Thursday, September 10, 2015 1:56 AM
> To: [email protected]
> Subject: RE: [NTSysADM] OT-ish: date calculation in Excel
>
> If you factor in leap years don't forget that the common simplistic rule
> of "every year divisible by 4 is a leap year" is wrong
> https://en.wikipedia.org/wiki/Leap_year#Algorithm
>
> Not that it matters until 2100 :P
>
> Regards,
> Freddy
> -----Original Message-----
> From: [email protected] [mailto:
> [email protected]] On Behalf Of Kurt Buff
> Sent: Thursday, 10 September 2015 1:38 PM
> To: ntsysadm <[email protected]>
> Subject: Re: [NTSysADM] OT-ish: date calculation in Excel
>
> On Wed, Sep 9, 2015 at 6:46 PM, Brian Desmond <[email protected]>
> wrote:
> > Kurt-
> >
> > Is there a reason you don't always want the tapes retained for four
> > weeks? Is it that your retention is defined as "a month" rather than say
> 28 days?
>
> First - thanks for this. I appreciate it.
>
> But that's basically it - it's stated as 3 months. I could have just put
> it at 28 days (or 31 days, and corrected for the length of the month), but
> that still doesn't correct for the Wednesday delivery.
>
> > I assume your retention on the monthly tapes is "3 years" rather than
> 1,095 days?
>
> Yep.
>
> > Anyway, I think I got what you laid out. I borrowed the formula from
> > here
> > http://www.mrexcel.com/forum/excel-questions/523063-number-weeks-month
> > .html for part of it. There's probably an easier way to do it but it
> > was an interesting problem for my short flight this afternoon. I didn't
> figure out how to factor in leap years so your annual retention is
> potentially off by a couple days.
>
> I can certainly live with that.
>
> > If you simplify to retention in days rather than months it's way
> > easier. I posted it here if anyone wants to look.
> > http://1drv.ms/1KFouIY
>
> Actually, I'm going to raise the possibility to management of putting it
> to being 42 days, rather than a month, or 28 days. I think that covers long
> months and holidays better.
>
> Until then, I'll work with your example.
>
> Unfortunately, the link you sent says it's empty, and there's no
> attachment to your email.
>
> Kurt
>
>
>

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