C'ristan wrote:

Yeah I guess so ... it just seems odd to me as the KI is D'ni tech, originally linked to the GZ, both for co-ordinates and timekeeping.

But you're right, having been recalibrated by the DRC, why shouldn't they use it to match local surface time?

Were you not also working on the day cycle in Negilahn? Do you findings match what others have said? How do they differ? How are they similar?

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Interesting idea. A few things though, after trying to plug in the new corrected data 15h42m cycle, I'm getting some strange compounding error discrepancies between my hand calculations and your page.

All times posted are Cavern Time = Mountain standard (GMT-7)

[Old data]
'Sun Mar 4 03:19:00 2007' Confirmed
'Sun Mar 4 19:01:00 2007' Confirmed
'Mon Mar 5 10:45:00 2007' See correction notes

Error correction starts here based on the "10:43" average appearance (ki time) when the portals started to appear. I've included here the new corrected portal appearance time for reference, and their subsequent predictions based on the new day length.

Mon Mar 5 10:43:00 2007' Confirmed
'Tue Mar 6 02:25:00 2007'
'Tue Mar 6 18:07:00 2007'
'Wed Mar 7 09:49:00 2007'
'Thu Mar 8 01:31:00 2007'
'Thu Mar 8 17:13:00 2007'
'Fri Mar 9 08:55:00 2007'


Since all the times here are Cavern time, I plugged in the new day length, and the start time (I assume its the basis for calculating the next portal time) and I end up with some very odd results.

Also, the problem with predicting so far into the future is that we still don't have a precise enough handle on the exact time between portals. We have it close enough to make a few days worth of predictions, but compounding error can really toy with us if we are not as precise as we can be.

Another thing. I have NO idea how tomorrow's downtime will affect any of these results. Its possible that when the servers go down, all times will be reset... in which case we'll have to start from scratch and find the first portal again.

Edit: Found the problem. Your "midnight" and "portal appearance" values are listed in the wrong columns. The math is good but the placement is not.

So far, sil, I haven't enough info from inside Neg to add to what has already been posted

Can confirm:

Tues March 7 02:25 MST (09:30 my time - UK) portal appeared on time, I got through no problem, had to switch to 3rd person to hit the spot, got a rather wobbly looking querter-stone, no other stones missing, me happy, me going to work

The same to me, but with some timeshift: portal lights happen at
Tues March 7 02:27 KIT (10:29:30 my time - CET)

Well, there are some timeshift: yesterday I get some report of the portal lights happen 6 minutes later then mine!
This event was calculated for me 6 minutes earlier. So without more exact time of more events for a better precalculation of them.

@Overdrive:

Sorry, I haven't understand your prolem with the 'wrong' columns. The portal lights appears at midday!
Maybe I'm wrong, but I feeled, this event was at midday
The other problem, the timeshifting, we have not enough information for better calculation
But hopefully it would be better with more events soon.

Time Confusion:

Well, for me caverntime is the converted D'ni-time and has no daylight saving.
On the other side, the KI was controlled by the DRC and for better interaction with the surface it is better, the KI-time goes with daylight saving.

For the first I include the KI-time (KIT) in my page and for better precalculation I implement some timeshift-function (soon).

The calculation of the daylight saving needs more work

I assume that the D´ni applied the 25 unit (hour) scheme on every age they linked to.
I´m not aware of any confirmed info on that, but negilahn seems to be about learnig the D´ni time-measuring-system. greydragon´s "it takes time to solve this age" obviously meant: learn about the D´ni time, using this age and by doing so "solve" the age)
If the D´ni used the 25 hour system in negilahn we would have to divide it in 25 units, based on the day-night-circle we already have.
The Negilahn Day is 15 hours and 43 Minutes long That is 943 "surface-minutes"
We would have to divide this by 25 to get the length of ne Negilahn "hour" the way the D´ni would have measured but expressed in "our" time.
One Negilahn hour would thus be 37,72 minutes long, that is 37 min: 43 sec.

If the 18 has any relevance beside numbering the pod, maybe something will occur on the 18th negilahn hour or sometime around that time.
This time would be 11hours :19 minutes of "our" time in the day. Question would still be: What is the starting point? Noon? Midnight?

I I was told there was list of times to be in my pod . Where is it? Please I am tired of waiting . Yes I am a sissie!!!!

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nebodin wrote:

Im not sure how programming in UTC is going to help deal with the DST issue.

It helps a lot. UTC has no DST which makes live much easier. Either UTC or Unix timestamps are less error-prone.

Can we agree on defining some terms for future conversations?

Cavern time -> artificial introduced time by the DRC equal to MST/MDT, the time zone of Eddy County, New Mexico
D'ni time -> time keeping system used by the D'ni based on the light cycle of the algae in the lake
KI time -> see Cavern time
MDT -> Mountain Daylight Time (MST +1h DST, UTC-6)
MST -> Mountain Standard Time (time zone in USA, UTC-7)

_________________

[KI again #01792364]| Uru images | KI guide

So how is cavern time affected by daylight savings time?

_________________

I may have missed this somewhere, but how did you guys actually work out _when_ midday and midnight was in Negilahn? Did you see when the portal opened, then waited until it opened next, worked out how long that was, and then waited until it opened again and figured that there was equal amounts of day and night between them, or something like that?

Also, and I don't mean this in a bad way, but could a person like me (who can only access Uru after about 10:30PM because of the 0 seconds remaining problem) have worked this out on my own? It's just how I prefer to play, but I've found I crash back to XP after about 10:30AM, so I've never been able to spend a long time in Negilahn (I know, sleep is for the dead, but sometimes I just can't help myself)

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@Tiran: thanks for the UTC-hint and sorry that I misunderstood it
@Overdrive: Maybe you are right, that there is some timezoneerror because I haven't recogniced that the javascript-object Date calculate internaly in UTC, but in- and output of time normaly is localiced time, and...

Ok, I am working hard to eliminate this error

@Tiran:

Please, dont tie Cavern time and KI time.
KI time is definitly controlled by the DRC and there are some information that the DRC will be changing the KI time on next sunday for daylight saving.
But Cavern time ... Cavern ... it sound like a stable time, stable like stone,... non political...
I prever that Cavern time is GMT-7 without daylight saving as the surface representation of the converted D'ni time.

Guy wrote:

So how is cavern time affected by daylight savings time?

Cavern time = KI Time

D'ni time is something different

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juri1at wrote:

Please, dont tie Cavern time and KI time.
KI time is definitly controlled by the DRC and there are some information that the DRC will be changing the KI time on next sunday for daylight saving.
But Cavern time ... Cavern ... it sound like a stable time, stable like stone,... non political...
I prever that Cavern time is GMT-7 without daylight saving as the surface representation of the converted D'ni time.

I'm *very* sure that my definition of cavern time is correct. The KI shows the Cavern time and Cavern time is bound to MST/MDT with DST.

_________________

[KI again #01792364]| Uru images | KI guide

Tiran wrote:

Guy wrote:

So how is cavern time affected by daylight savings time?

Cavern time = KI Time

So we don't really know what will happen with it then.

_________________

Yes we do. KI time = Cavern Time = MST currently. KI time / Cavern Time will be moved on an hour when DST starts on March 11th.

Last edited by Rusty_Russell on Tue Mar 06, 2007 2:54 pm; edited 1 time in total