[REBOL] unix timestamp conversion? Re:(3)
Is the line
> prin ["Epoch date" epoch "is" 1-Jan-1970 + days2 time2]
perhaps supposed to have + inserted before 'time2.
The + operation for adding an integer number of days to a date does appear
to correctly take care of leap years, including that century years are not
leap years unless they are multiples of 400, (like 2000), in which case
they -are- leap years. You can test this by
>> >> 1-jan-1999 + 365
== 1-Jan-2000
>> 1-jan-2000 + 365
== 31-Dec-2000
>> 1-jan-1000 + 365
== 1-Jan-1001
>>
Russell [EMAIL PROTECTED]
- Original Message -
From: <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Friday, February 25, 2000 4:05 AM
Subject: [REBOL] unix timestamp conversion? Re:(2)
> Will this script, submitted to the mailing list take into account
> leap years etcor will there be a small descrepency?
>
> Cheers
>
> Francois
>
>
> On Mon, 21 Feb 2000 [EMAIL PROTECTED] wrote:
>
> >
> > > Anyone written a script to convert unix timestamps (is 950618412) to
> > > a usable rebol date and time format.
> > >
> > > Cheers
> > >
> > > Francois
> > >
> > >
> >
> > Hi Francois:
> >
> > Try this.
> >
> >
> > REBOL [
> > Title: "Convert Epoch Time to Date"
> > Author: "Ralph Roberts"
> > File: %epoch-to-date.r
> > Date: 21-Feb-2000
> > Purpose: {converts UNIX Epoch time (seconds after 1-1-1970
> > to current date and time }
> > Example: {outputs "Epoch date 951142987 is 21-Feb-2000
> > 14:38:52 GMT or 9:38:52 Local" }
> > ]
> >
> > epoch: 951142987
> >
> > days: divide epoch 86400
> >
> > days2: make integer! days
> >
> > time: (days - days2) * 24
> > hours: make integer! time
> > minutes: (time - hours) * 100
> > minutes2: make integer! minutes
> > seconds: make integer! (minutes - minutes2) * 100
> > time2: make time! hours * 60) + minutes2) * 60) + seconds)
> >
> > prin ["Epoch date" epoch "is" 1-Jan-1970 + days2 time2]
> > print [" GMT or" time2 + now/zone "Local"]
> >
>
[REBOL] unix timestamp conversion? Re:(2)
Will this script, submitted to the mailing list take into account
leap years etcor will there be a small descrepency?
Cheers
Francois
On Mon, 21 Feb 2000 [EMAIL PROTECTED] wrote:
>
> > Anyone written a script to convert unix timestamps (is 950618412) to
> > a usable rebol date and time format.
> >
> > Cheers
> >
> > Francois
> >
> >
>
> Hi Francois:
>
> Try this.
>
>
> REBOL [
> Title: "Convert Epoch Time to Date"
> Author: "Ralph Roberts"
> File: %epoch-to-date.r
> Date: 21-Feb-2000
> Purpose: {converts UNIX Epoch time (seconds after 1-1-1970
> to current date and time }
> Example: {outputs "Epoch date 951142987 is 21-Feb-2000
> 14:38:52 GMT or 9:38:52 Local" }
> ]
>
> epoch: 951142987
>
> days: divide epoch 86400
>
> days2: make integer! days
>
> time: (days - days2) * 24
> hours: make integer! time
> minutes: (time - hours) * 100
> minutes2: make integer! minutes
> seconds: make integer! (minutes - minutes2) * 100
> time2: make time! hours * 60) + minutes2) * 60) + seconds)
>
> prin ["Epoch date" epoch "is" 1-Jan-1970 + days2 time2]
> print [" GMT or" time2 + now/zone "Local"]
>
[REBOL] unix timestamp conversion? Re:
> Anyone written a script to convert unix timestamps (is 950618412) to > a usable rebol date and time format. > > Cheers > > Francois > > > And to do it the other way around, i.e. generate an Epoch date: REBOL[ ] date: now seconds: ((date - 1-1-1970) * 86400) + (date/time/hour * 3600) + (date/time/minute * 60) + date/time/second zone: now/zone zone: zone/hour zone: zone * 3600 seconds: seconds - zone ; minus a minus gives plus print seconds ; Epoch date
[REBOL] unix timestamp conversion? Re:
> Anyone written a script to convert unix timestamps (is 950618412) to
> a usable rebol date and time format.
>
> Cheers
>
> Francois
>
>
Hi Francois:
Try this.
REBOL [
Title: "Convert Epoch Time to Date"
Author: "Ralph Roberts"
File: %epoch-to-date.r
Date: 21-Feb-2000
Purpose: {converts UNIX Epoch time (seconds after 1-1-1970
to current date and time }
Example: {outputs "Epoch date 951142987 is 21-Feb-2000
14:38:52 GMT or 9:38:52 Local" }
]
epoch: 951142987
days: divide epoch 86400
days2: make integer! days
time: (days - days2) * 24
hours: make integer! time
minutes: (time - hours) * 100
minutes2: make integer! minutes
seconds: make integer! (minutes - minutes2) * 100
time2: make time! hours * 60) + minutes2) * 60) + seconds)
prin ["Epoch date" epoch "is" 1-Jan-1970 + days2 time2]
print [" GMT or" time2 + now/zone "Local"]
[REBOL] unix timestamp conversion?
Anyone written a script to convert unix timestamps (is 950618412) to a usable rebol date and time format. Cheers Francois
