Which night in 2006 has the shortest day time?

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Jin Peng
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Which night in 2006 has the shortest day time?

Post by Jin Peng »

[font=Comic Sans MS]May I know other than 25th March - 1st April 2006... is there any dates lies near september as well where I can get to see all nearly 88 constellations in a night? Looking for the exact dates for winter solstic.[/font]
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Canopus Lim
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Post by Canopus Lim »

If I'm not wrong the winter solstice is on 24th/25th December and the sun will be at -23.5 degree latitude. I'm not sure when almost all the 88 constellations can be seen.. hehe. But in Spore especially now with all the rain and clouds, 1/88 can be seen and that is Orion. :P
ChaosKnight
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Re: Which night in 2006 has the shortest day time?

Post by ChaosKnight »

Jin Peng wrote:[font=Comic Sans MS]May I know other than 25th March - 1st April 2006... is there any dates lies near september as well where I can get to see all nearly 88 constellations in a night? Looking for the exact dates for winter solstic.[/font]
You can see at most only 44 constellations in a night.
The rest are on the other side of the sun.
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Canopus Lim
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Post by Canopus Lim »

It may not be 44 constellations as constellations come in varied sizes. Some are large and some are real small. Also, it depends on which latitude you are on earth. There are many southern constellations that are small. Also, these constellations are unequally distributed and hence it may be possible to see more than 44 in the whole night depending on location and month on earth. However, it is true that seeing 88 constellations in one night is impossible.
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Jin Peng
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Post by Jin Peng »

>< i thought 22nd or 23rd September is winter solstic? coz i recall march and september one of these dates in the month had the shortest daytime. Which means i get to see nearly all 88 constellations right?
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Jin Peng
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Post by Jin Peng »

>< i thought 22nd or 23rd September is winter solstic? coz i recall march and september one of these dates in the month had the shortest daytime. Which means i get to see nearly all 88 constellations right?

~Jin Peng~ ...Republic Poly Astro!
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gwenyi
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Post by gwenyi »

err i dun think u can see all 88 at 1 shot i guess. assuming u're in northern hemisphere, u'll get to see approximately 1 half's worth of constellations. and similarly if u're in the southern hemisphere, u'll get to see the other half.

to put it simply, u can't see all constellations as the other half of the earth is 'blocking'.
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Post by starfinder »

I think we can see a lot more than one half (or 50%) of the sky (celestial sphere) in one night, from the tropics.

I've checked it up with a planetarium software before. Let me double check this one day.

I don't think half the sky is "blocked" by the Sun in one day, because the Sun rises and sets before and after the constellations in its vicinity.

For example, at any one moment in the night, e.g. 8pm, we are already seeing I think close to 50% of the celestial sphere from the tropics. Thereafter, at midnight, 4am, 6am, etc, other areas of the sky come into view.
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Canopus Lim
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Post by Canopus Lim »

Yup.. as said earlier it depends on the lattitude and month... wonder which night will enable us to see the maximum number of constellations in Spore?
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weixing
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Post by weixing »

Hi,
Although it is possible to see all Messier objects in 24hrs, but I don't think it is possible to see all constellations in 24hrs... unless you are in the equator and a total solar eclipse occurs. Even this happen, you may still not be able to see some extreme north and south constellation.

Have a nice day.
Yang Weixing
:mrgreen: "The universe is composed mainly of hydrogen and ignorance." :mrgreen:
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