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Information for light stand (sundial) commentary society

2019.09.19

haisai! Summer vacation is over, and want to become Okinawa coolly from now on for autumn; how do all of you have nowadays?

Well, we perform commentary fair of light stand said to that we put together in Shurijo Castle in the Autumnal Equinox Day and measured the time in Shurijo Castle in the King Shuri prefecture times for 22, three days of 23rd on September 21 (nichieidai). We go to visit Shurijo Castle by all means at this opportunity, and how about feeling "time" of Ryukyu kingdom?

In addition, please actually make by all means at home, "you will make light stand!" (sundial) as you distribute clock board paper of sundial after having heard commentary fair.

 
[light stand (sundial) commentary society]

 [Dates and time] Saturday, September 21, 2019, Sunday, September 22, September 23 (month, the Autumnal Equinox Day)
  •      ①12:20 -,② 14:20 ... (for each around 30 minutes)

 【Place】 Shurijo Castle Park light stand (the free area)
 
 【Admission】 Free ※No appointment necessary
 
※We may cancel by weather


What is ... light stand (sundial)? ...
Light stand (sundial) was installed as supporting tool of water clock in 1739 for the King Shuri prefecture era and was used until establishment of prefectures in place of feudal domains of 1879.

Copper stick is attached to board (disk of stone) at the time ticked away of the twelve signs of the zodiac, and it is supposed that we measured the time by the light.

Seemed to change angle 24 times a year based on the twenty-four seasons in the old calendar to measure the time exactly, but is current Shurijo Castle Park, in Shunbun in Shubun on the summer solstice in winter solstice change only four times a year, and change angle in total in this time Shubun of those.

  
State of light stand commentary society
   
↑Light stand in wide fortune door front              We are changing angle in ↑ Shurijo Castle 4 times a year now
  
↑We stuck clock board paper (going to distribute in commentary society) on corrugated cardboard and made. As it is Shubun, we make angle of stand with 45 degrees and turn aspect to the north. By the way, central needle is toothpick. As shadow of needle points at non-(sheep), the time is around half past 14. Please make.
 

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