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Nocturnal Geocoin JohnnyM.'s Nocturnal Geocoin

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JohnnyM. Send Message to Owner Message this owner
Monday, 07 July 2008
Recently Spotted:
In the hands of the owner.

This is collectible.

Use TB2E36P to reference this item.

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Current GOAL

To be in small collection of my owner.
I want to travel from event to event with my owner.
You can see me in the hands of JohnnyM. mostly stays in Prague (Czech Republic).

About This Item


How to use me:

  1. You will have to wait until it is night time. I know you are eager to put this coin into use, but trust me when I say it is worth the wait.

  2. Determine which of the dipper constellations you will use to take your reading.

  3. Then choose the corresponding tab on the time disk and align it with the current date.
  1. Keep the time disk side of the coin facing towards you and hold the coin upright so that the top point of the coin is directly up and the bottom indention is centered directly down. A more accurate reading will be achieved if you ensure to do this. There are several ways to hold this coin; however, one way we found to be very effective is to place your middle finger on the top point, and place your thumb on the bottom indention. This automatically causes your hand to naturally center the top and bottom of coin vertically. Then by placing your index finger over both the time disk and the edge of the arm will prevent the pieces from moving out of adjustment once you have the moving pieces set.

  2. Hold the hole of the coin close to your eye and center Polaris in it. It is more effective to keep both eyes open.

  3. Then move the coin a few inches straight out from your eye while keeping Polaris centered in the hole.
  1. Once you find the correct distance from your eye, align the un-notched edge of the arm with the corresponding stars in the dipper you had previously chosen (Kochab in the litter dipper, or the pointer stars in the big dipper). The example below shows lining up the arm with the star Kochab.

  2. Once set, ensure the time disk and arm do not move.

  3. Pull the coin away from your face and take a reading from the time ring. You now have the approximate time of night. The example below shows the time is 2:45.
  1. If you know the time of your port of departure, then you can use the time reading to ensure you are keeping within the same longitude. Once you get too far to the east or west of your departure point, then the longitude calculations become inaccurate. As opposed to the nocturnal, the chronometer is the device which allowed accurate longitude readings at any point on earth.

  2. The back of the coin is used to calculate latitude deviation and is scaled in minutes. You take readings with it in the same way as the time side of the nocturnal: hold the nocturnal so that the deviation scale is facing you; rotate the arm to one of the dipper constellations; then subtract or add the corresponding number which the arm references to from the latitude reading you took with your quadrant. For example: if your quadrant reads 35 degrees and the deviation of the nocturnal reads -23, then your latitude is approximately 34 degrees and 37 minutes.

Gallery Images related to JohnnyM.'s Nocturnal Geocoin

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Tracking History (694.4mi) View Map

Discovered It 10/03/2019 Haedel 80 discovered it   Visit Log

Danke fürs zeigen

Discovered It 09/01/2019 mediasphere discovered it   Visit Log

Widziane na keszerskim szlaku Spotkaniach Eventach :( Niestety dopiero teraz nadrabiam zaległości Które się namnożyły

Discovered It 08/31/2019 ivans discovered it   Visit Log

Seen during mega-event in Prague, thanks.

Discovered It 07/22/2019 PetjeOp discovered it   Visit Log

Discovered in a yt video 😊 Thanx so much for sharing!

Discovered It 07/13/2019 gégé57 discovered it   Visit Log

Vu dans la video GPS Maze

Discovered It 07/08/2019 jackyannetrott discovered it   Visit Log

Vu dans la vidéo GPS maze de geonord .

Discovered It 07/01/2019 Belugue discovered it   Visit Log

Seen in the video "GPS Maze Europe 2015"on the GeoNord Mega Event site. Thanks for sharing

Discovered It 06/01/2019 DVERK discovered it   Visit Log

Saw this TB during the last time by visiting a mega, giga, event, normaly cache or something else. Thanks for sharing.

Discovered It 04/28/2019 Mazurteam discovered it   Visit Log


Discovered It 04/28/2019 Waczurki discovered it   Visit Log


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