Plan to introduce the 350 Day year, using KiribatiTime as the canonical point to start, or decide on some point together through a process. Phase One, KiribatiTime.
Days increase to 25 hours and the day starts at a rotating point (starting from KiribatiTime), and travel west one timezone each 25th hour. Start getting people on a global mindset when we have the same day.
At the end of the year, there is LongDay?, a 72 hour celebration of life.
Starting this new earth timeline should be on a significant point as well. May Day? Earth Day? What other culturally significant day can we agree upon?