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Blue Moon Challenge Cache

A cache by mike.armstrong Send Message to Owner Message this owner
Hidden : 3/16/2014
3 out of 5
2 out of 5

Size: Size: small (small)

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Geocache Description:

The cache is at the listed coordinates, but this is a challenge cache, so there’s a little more to it! You may only log it if you have found a cache (or attended an event) on 13 different days when there was a full moon – the definitive list of dates as far as this cache is concerned is at the US naval observatory website, which has data going back to 1700!

Please upload a list of your qualifying caches and the dates that you found them in your log to prove that you qualify.

For extra credit you could find this on a date with a blue moon – which is now considered to be the second full moon in a calendar month. These happen approximately every three years – the first blue moon during the life of this cache was in July 2015, the next is in January 2018.

Here's my qualifying list as an example:
06/05/12: GC38VPP Warp & Weft ~ Beginings
02/08/12: GC2XZW9 Looking for JEREMY FISHER
31/08/12: GC35TXD Saranrom Park - THIS ONE WAS A BLUE MOON!
29/10/12: GC1C5F Tintagel Castle
28/12/12: GC3GGRN A maths teacher's revenge
27/01/13: GC9D73 Thought for the Day
25/02/13: GC46E9P 18th Elephant
27/03/13: GC46C1P Wallsend Dene North
25/04/13: GC2FW3B T Junction
25/05/13: GC12K79 Craignethan Castle
22/07/13: GCTPBD Bedes Well
21/08/13: GCDC1B Spud's Estupendo Uxmal
19/09/13: GC4KCNW It's My Life

The other “normal” full moons have traditional names in many cultures; I like this list:

Month Name
January Old Moon
February Wolf Moon
March Lenten Moon
April Egg Moon
May Milk Moon
June Flower Moon
July Hay Moon
August Grain Moon
September Fruit Moon
October Harvest Moon
November Hunter’s Moon
December Oak Moon

The cache is hidden near a sculpture called Rolling Moon by Colin Rose. It was constructed for Gateshead’s site at the Glasgow Garden Festival in 1988 and moved to its current location in 1990. It’s a 27-metre span arch which is 11m high supporting a spun steel ball 1.3 metres in diameter. It represents the moon and its effect on tides and maritime history.

There is a checker to see if you qualify for the challenge at this link.

Additional Hints (Decrypt)

Xarr uvtu va gur gerr oruvaq gur ynzccbfg

Decryption Key


(letter above equals below, and vice versa)



127 Logged Visits

Found it 101     Write note 21     Publish Listing 1     Needs Maintenance 1     Owner Maintenance 3     

View Logbook | View the Image Gallery of 30 images

**Warning! Spoilers may be included in the descriptions or links.

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Rendered From:Unknown
Coordinates are in the WGS84 datum

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