You're looking for a small, well-camo'd, water tight container containing a log, a handful of foreign coins, and one of the copper vacuum seal rings from my fusion reactor.
If you find that your sunny day coordinates are different from my cloudy day coordinates, please do let me know and I'll update them!
Please restore the camo when done.
"Hello from the children of planet Earth."
In 1977, we launched two probes into the solar system to relay back pictures of the outer planets.
Astronomer Carl Sagan led the effort to produce a golden record stored on board that would include sights and sounds from the human race as a greeting to anybody out there that might find the spacecraft as it drifts through interstellar space.
The record's cover was etched with symbols very carefully designed to explain how to play it, using physical references likely to be valid anywhere in the universe. The symbols include information about our time units (measured in state transitions of a hydrogen atom, the most abundant element in the universe), our location in the universe (using the relative distance to 14 pulsars with regular periods), and instructions how to interpret the signals on the record to display images and play back sound.
The record contains greetings in 55 languages, various sounds both natural and man-made, a recording of human brainwaves, 116 photos, and a wide selection of music. Sagan meant to include "Here Comes the Sun" by the Beatles, but record label EMI refused to allow it.
Now 37 years old, both probes are still operating as they sail silently through interstellar space outside the solar system. The signals they send are very faint by the time they get to Earth; a digital watch consumes 20 billion times more power. The probes aren't headed toward any specific star. Engineers calculate that the records could survive out there for upwards of a billion years. Who knows... maybe someone out there will find them and say hi back.
A compilation of the images and sounds on the Voyager probes' golden records can be found here: http://youtu.be/Axj1CVG6udE