The year that can be read right side up and upside down is 1991. When flipped, the digits remain unchanged and still read as 1991. Neither 1990 nor 1999 has that property.
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.
The year 1961 can be read upside down or right side up and still appear as "1961." This unique characteristic is due to the specific shapes of the numerals used. Other years within that range do not share this symmetrical property.
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
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
The year that can be read right side up and upside down is 1991. When flipped, the digits remain unchanged and still read as 1991. Neither 1990 nor 1999 has that property.
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.
The only common English words that read the same backwards and upside down are the interjection OHO, the abbreviation SOS, the diminutive SIS and the word NOON. (Only OHO also appears the same in a mirror.)They are palindromes (read the same forward and backward) and are made from the letters H, I, N, O, S, and Z which appear the same when inverted.The word "MOM" does not qualify because upside down it reads "WOW". The proper name "SOHOS" would also be a palindromic and inverted version.
Read BLOBBLES upside down: 53788078<--- that's the combination. that is BLOBBLES upside down. -Maddidan thanks it actually works nice job ;)