1961 was the last year that read the same upside down and right side up. After 1961, the next year that will satisfy this condition is 6009.
1919
Look for others to confirm this, but if I understand the question I think you are referring to a soletta http://en.wikipedia.org/wiki/Solar_mirror Having just read this article it seems like they also call them solar mirrors. Seems obvious now lol.. Hope that helps
Weathering and erosion caused by exposure to elements like rain, wind, and sunlight can wear down the surface of the marble, making the inscription harder to read over time. Additionally, biological growth such as moss, lichen, or algae can accumulate on the stone and obscure the text.
Astronaut Frank Borman the comander of Apollo viii spacecraft read from the bible . He read from the book of Genises chap 1 verse 1 , the creation of the world.
As long as it is in all capitals, the word "SWIMS" can be read upside down.
They both read the same when rotated 180 degrees.
1961 can be read the same way right side up and upside down.
I think it is because people are used to read from left to right ( normally ), but when they read upside down with text or numbers, they still read from left to right, and that is why reading upside down, in my opinion, affects our fist thoughts without hesitating. Tell me if I am wrong or not!
The speciality of 1961 is that it can be read upside down!
SWIMS
So that it can be read by drivers on the road who are looking in their mirrors.
1913
1961 was the last year that read the same upside down and right side up. After 1961, the next year that will satisfy this condition is 6009.
Read BLOBBLES upside down: 53788078<--- that's the combination. that is BLOBBLES upside down. -Maddidan thanks it actually works nice job ;)
1961
1961