What is Day? A Basic Definition

Sidereal \Si*de"re*al\, a. [L. sidereus, from sidus,
         sideris, a
   constellation, a star. Cf. Sideral, Consider,
         Desire.]
   1. Relating
         to the stars; starry; astral; as,
         sidereal
      astronomy.
      [1913 Webster]

   2.
         (Astron.) Measuring by the apparent motion of the stars;
  
            designated, marked out, or accompanied, by a return to
         the
      same position in respect to the stars; as, the
         sidereal
      revolution of a planet; a sidereal day.
   
           [1913 Webster]

   Sidereal clock, day, month,
         year. See under Clock,
 
             Day, etc.

   {Sideral
         time}, time as reckoned by sideral days, or, taking
     
         the sidereal day as the unit, the time elapsed since a
    
          transit of the vernal equinox, reckoned in parts of a
    
          sidereal day. This is, strictly, apparent sidereal time,
 
             mean sidereal time being reckoned from the transit, not
         of
      the true, but of the mean, equinoctial point.
   
           [1913 Webster]

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Off-site Day Links, User Submitted

The following links have been collected through user bookmark submission in the Day category. Please note, because these resources are off-site we cannot guarantee the accuracy or quality of any information.

Wed Jan 7

• Dustbowl WebQuest: Dustbowl
• The 4 day diet and 50millionpound s.com challenge: The 4 day diet - At this time of year after gathering food during holidays people tends to put their new year eve resolutions in real practice and one of those resolutions for the majority is probably loosing weight and getting on a healthy lifestyle. I was watching the Today Show this morning and they were talking about this new diet program called The 4 Day Diet book - they really got my...
• Public Domain Day 2009 | publicdomain's Xanga Site - Weblog
• gateway
• Karmahill's Bookmarks on Delicious
• Boot Daily - Boot-up your tech! - Home
• LG gr-b429blja: LG gr-b429blja
• My Spa (Pittsburgh) Worked Magic On My Facial Lines!: Acqua Blu Medical Spa has the best facials in town. They are a true medical spa, with everything from Botox to microdermabras ion to waxing. I feel 10 years younger after my facial treatment. I would recommend Acqua Blu to anyone looking to refresh their look.
• AM 900 - CHMLAM - Snow Day Cancellations
• Search Engine Optimisation , SEO: Search Engine Optimisation , SEO - 30 day trial
• Kitesurfer on Boxing Day: I've taken this picture at the beach near Tarifa, Spain. It was Boxing Day and because of a strong wind a lot of kitesurfers where drawn to the water
• Valentines Day Wedding Ideas

Tue Jan 6

• Fast Payout Loans: Quick Petite Cash Loans: Fast payout loans offer monetary assist in a simple way and in quick span of time. Apply for the loans to meet your immediate needs such as electricity bills, educational bills, previous debts, car repair or home repair and a lot more with smooth.
• next day loans for students - Student Unemployed Loans: Next day payday loans offers Loans on next day,Next day loans,Next day advance,Next day loans no faxing,Next day cash loans
• How to Make Green Beer for St. Patrick s Day | eHow.com: If you have ever attended a St. Patrick s Day celebration, you have witnessed, if not tried yourself, the spectacle that is the now-traditiona l green beer. Contrary to popular opinion, there is very little difference between this festive offering and the regular beer that you find in the store. Now you can prepare for your own St. Patrick s Day p

Off-site Day Research Links

If you still need additional information on Day then we suggest the following off-site resources. Please note, because these resources are off-site we cannot guarantee the accuracy or quality of any information.