A simultaneous Venus and Mercury transit will take place on July, 26th 69163.
The next Venus transit on December 11th, 2117 is not observable from Greece. The next chance to observe a Venus transit from Greece is on December 8th, 2125.
In 113 years from now, my Nikon d3100 DSLR will be 115 years old. I am not sure if its electronics will work properly but I am optimistic. My 24 years old EQ mount will do its work for sure. This mount has no electronics at all. Only some grease will be necessary in the next century.