Schiphol
NL19970731_B31 July 1997·Schiphol
Reported 31 July 1997 at Schiphol. One archive recorded it, so nothing about it can be cross-checked.
The record
- date
- 31 July 1997 (day precision)
- place
- Schiphol
The Netherlands - crop
- not recorded by any source
- size
- not recorded
- recorded by
- cc
- images
- 1 · 1 diagram
- writing
- nothing was written about this formation on any source
Also called
Nothing else. No other name or place string appears on any source record for this formation.
Where exactly
- coordinate
- 52.298430, 4.790940
- how it was got
- geonames
place, to within 2,000 m, from the cc record - on a map
- OpenStreetMap
No source publishes a coordinate for any formation in this archive. Every coordinate here is derived from the place name a source printed, and this page says how precise that makes it rather than rounding it away.
Images
1 image(s) on this formation's own source records. Click a tile for the full image; the bytes are fetched when you ask for them and are not stored in this page.
Diagrams (1)
| site | kind | credit | basis | caption | size | file | source page |
|---|---|---|---|---|---|---|---|
| cc | diagram | cropcirclecenter.com / Bertold Zugelder | site default | 575×415 33.4 KiB image/jpeg |
image ead17feac81c | https://www.cropcirclecenter.com/date/1997/199707.html |
Date
31 July 1997, to day precision. What a source records is the day a formation was found and reported.
- reported by
- cc: 31 July 1997
- weekday
- Thursday, day 212 of the year, ISO week 31, summer
- sun and moon
- 40.2 days after the June solstice; moon waning crescent (8% lit), 11.4 days after the full moon (computed at 12:00 UTC; a reported date is a discovery date, not a creation date)
Place
What each source printed, and the coordinate derived from it. No source in this archive publishes a coordinate of its own.
- coordinate
- 52.298430, 4.790940 — place, ±2,000 m, by geonames, from the cc record
- on a map
- OpenStreetMap
| site | place | county | country | grid ref | what3words | fix |
|---|---|---|---|---|---|---|
| cc | Noord-Holland | The Netherlands | 52.298430, 4.790940 place / geonames |
Crop and size
crop and size not recorded by any source
Source records
What each source published, side by side. A row whose values differ across the sources is marked: the archive prints the disagreement rather than choosing a winner.
| field | cc cropcirclecenter.com |
|---|---|
| id / slug | NL19970731_B |
| name | Schiphol |
| location | |
| county | Noord-Holland |
| country | The Netherlands |
| date reported | 1997-07-31 |
| date precision | day |
| crop | |
| size | |
| diameter (ft) | |
| grid reference | |
| what3words | |
| map link | |
| credits | cropcirclecenter.com / Bertold Zugelder |
| source page | https://www.cropcirclecenter.com/date/1997/199707.html |
| link to the entity | singleton decided by none on 2026-09-11 |
| warnings | no_formation_page |
| record | cc/15fa5a4e9dd21… raw record view: /formation/cc/15fa5a4e9dd217625806bba264ba6afe6de3ec3e326ebbd3aa65c2f7bf663287 in the preview app |
Texts
no text documents in the archive for this formation
Claims about this formation
no claim was extracted from a text about this formation
Geometry
1 diagram file(s) on this page. measured from the diagram itself, and experimental: the extractor's rotational order is right on 88.8 % of a 200-diagram hand-labelled set against a gate of 90 %, so read a number here beside the picture rather than instead of it.
| diagram | rotational symmetry | elements | rings | mirror | fill |
|---|---|---|---|---|---|
| cc ead17fea | ≈ none found | 3 | 1 | 0.883 | 0.2423 |
Experimental, and marked ≈ wherever it appears. These numbers are read off a drawing, not off the field: the extractor's rotational order agrees with a hand-labelled set on 88.8 per cent of 200 diagrams against a gate of 90 per cent, its element count is within one on 97.5 per cent, and its ring count is not calibrated at all. Nothing in the analysis tree is derived from the rotational order while that gate is unmet.
Diagrams that look like these: cc ead17fea— the nearest by perceptual hash. The whole archive is browsable by shape in the shape section, and this formation's own diagrams go straight into that grid: show them in the grid.
Neighbours
In time
- previous
- Etchilhampton 30 July 1997, Etchilhampton
- next
- Lindau 1 August 1997, Lindau
- previous in NL
- Purmerend 30 July 1997
- next in NL
- Brummen 5 August 1997
- same day
- Groenstraat (Groenstraat) · Alton Barnes (Alton Barnes) · Badbury Castle (Badbury Castle) · Keysley Down (Keysley Down) · Liddington Castle (Liddington Castle) · Marlborough (Marlborough)
- within 7 days and 25 km
- Leimuiden 27 July 1997, 11.7 km away, 4 day(s) apart
In place
The nearest formations the archive can place.
Schiphol16 May 2008Schiphol
0 m away, 2008-05-16 Aalsmeer1994
Aalsmeer
4.9 km away, 1994
Hoofddorp1990Hoofddorp
7.0 km away, 1990 Amsterdam18 January 1997
Amsterdam
10.8 km away, 1997-01-18
Leimuiden27 July 1997Leimuiden
11.7 km away, 1997-07-27 Lisserbroek7 August 1996
Lisserbroek
15.6 km away, 1996-08-07
- same county and year
- none
Provenance
- entity built at
- 2026-09-11T19:20:39Z (derived from the link decisions, not from this build)
- index run ids
- none
- reviews applied
- none
- open queue pairs
- none
- entity record
- index/formations/NL19970731_B.json · row in index/manifest.jsonl
- input digests
- entity 09b078f0f9eb · images 267441c6b68f · texts 4f53cda18c2b · geo cc8998f3d86a