Celestia Forums

Has any one with a bit more knowledge than me.
been able to work out any of the time frame events for anything else ?
such as apollo space crafts, sputnik, hubble, and so on

and what was the reason for not useing a normal date system
such at

Start: 02/04/78
end: 05/05/85

Im just wondering, as Personally I would have found this much easyer to understand.

Im really not much of a science head, (sorry ) and know even less about Space Science,
But Space fascinates me as much as the Egyptians do.
and I can stare at the stars for hours,

But sadly I llive in the center of London
not much to see from here. I have only ever seen the milkyway and the Arora once.
Anyway..... thats enough of my life story, sorry....

If anyone has worked out more time frames, could you share... Please

Sadly no but heres a place to convert dates to Julian: http://aa.usno.navy.mil/data/docs/JulianDate.html

Darkmiss,

I suspect that Celestia uses Julian dates because that's what astronomers use. It makes it easier to do the math when just one floating point number is involved. However, Chris has said that he intendes to make it possible to use at least one of the more familiar Gregorian date formats RealSoonNow. (I see that some code to do that alreasdy is on SourceForge, so it'll probably appear in 1.2.5 final.)

selden wrote:Darkmiss,

I suspect that Celestia uses Julian dates because that's what astronomers use. It makes it easier to do the math when just one floating point number is involved. However, Chris has said that he intendes to make it possible to use at least one of the more familiar Gregorian date formats RealSoonNow. (I see that some code to do that alreasdy is on SourceForge, so it'll probably appear in 1.2.5 final.)

It's already in 1.2.5pre7 . . .

Beginning, Ending, and Epoch can all be specified as calendar date strings instead of Julian dates.

They should appear in this format:

yyyy mm dd hh:mm:ss

where hours, minutes, and seconds are optional.

Example:

Beginning "2001 3 21 10:15"
Ending "2002 11 8 9:45:30"

--Chris

Darkmiss wrote:But sadly I llive in the center of London
not much to see from here. I have only ever seen the milkyway and the Arora once.

what do you mean, once? some of us that live on the central-east coast (US) wouldnt know what they are with out the aid of text books and camera pictures.

billybob884 wrote:what do you mean, once? some of us that live on the central-east coast (US) wouldnt know what they are with out the aid of text books and camera pictures.

Well I definatley didnt see them from here.
It was a sports holiday up into the lake district, up in the mountains
I didnt want to go home.

Thanks for the answers
Ill do some searching now for the dates that apollo 11 orbited the moon
and stuf like that now

And thanks Chris, that will make things so much easyer for me to set the dates that way.
the last thing you want is to set time back very early, and still have all your space craft floating around.

Ill go and search for some pages
But if anyone knows of the best site to go to, to get dates and times of
any and all space craft launch dates, that would be very handy

Thanks all