For timezones, see: https://en.wikipedia.org/wiki/Timekeeping_on_Mars https://en.wikipedia.org/wiki/Timekeeping_on_Mars For networking, see: https://en.wikiped

For timezones, see: https://en.wikipedia.org/wiki/Timekeeping_on_Mars https://en.wikipedia.org/wiki/Timekeeping_on_Mars For networking, see: https://en.wikipedia.org/wiki/Interplanetary_Internet https://en.wikipedia.org/wiki/Interplanetary_Internet There is no 'instant' messaging between Earth and Mars. Not possible.