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Long time base observations of the outer planets are critical in understanding the atmospheric dynamics and evolution of the gas giants. We propose yearly monitoring of each giant planet for the remainder of Hubble.s lifetime to provide a lasting legacy of increasingly valuable data for time-domain studies. The Hubble Space Telescope is a unique asset to planetary science comma allowing high spatial resolution data with absolute photometric knowledge. For the outer planets comma gas-ice giant planets Jupiter comma Saturn comma Uranus and Neptune comma many phenomena happen on timescales of years to decades comma and the data we propose are beyond the scope of a typical GO program. Hubble is the only platform that can provide high spatial resolution global studies of cloud coloration comma activity comma and motion on a consistent time basis to help constrain the underlying mechanics. Note that Saturn is not requested until 2018 comma when orbit allocation would increase from 29 to 41 here we show the orbits for Cycle 29.