Noctilucent clouds
Taken by Guntis Grandans on May 9, 2015 @ Plavinas, LATVIA
Click photo for larger image
  Camera Used: Canon Canon EOS 5D Mark II
Exposure Time: 6/1
Aperture: f/4.0
ISO: 2000
Date Taken: 2015:05:09 13:40:28
  
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Details:
First time in summer 2015
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Comments
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Sorry, but it doesnt look like NLCs at all.

Much more probably Cirrus at sunset/sunrise (hard to say, your EXIF datas are not accurate, it says that it was shot at mid-day...).

NLCs have a typical wave shape, NOT filaments.
On both pictures, we can see that sun is present, or very close to the horizon. NLCs appear 1/2 to 1 hour after sunset.
Posted by Sylvain 2015-05-10 08:47:13
I have to agrre Cirrus clouds but still look pretty good!
Posted by HDT 2015-05-10 15:30:54
Cirrus Clouds can sometimes look like NLC especially from northern latitudes when twilight can be very bright in the upper stratosphere long after sunset. Although, I strongly feel that they are not NLC, the proof is that such a dominant display as this would have been seen for hundreds of miles and triggered numerous additional observer reports! Therefore, I suspect its only a local appearance which is only similar. A bright dissipating meteor train, or disipating rocket plume would most likely also have additional reports. Lastly, it is exceptionally pre-early Noctilucent Cloud season, and I would suspect an anomaly like this would last several days. Unfortunately, this observation seems to be in isolation despite being over a highly populated area and therefore is unlikely. I have been fooled before and know it can be very hard to tell, sometimes under unusual lighting conditions. Thanks for posting Guntis.
Posted by AstroPilot 2015-05-11 08:17:45
 
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