The "seventh" day in the Fourth Commandment (a practice never given to Christian believers) was not always the 7th day using our western calendars.  The Israelites counted 7 days after the first full moon, 28+days, and that day became the Sabbath (FYI:  check the numerous times "New Moons" and Sabbaths are tied together in the Torah).

But there are countries and areas where their week does not begin on western first days, or Sundays, but many have a Thursday-Friday weekend (Iran, is an example), as the Muslims holy day is on Friday.   Why must Western Adventists impose a day free from work which has nothing to do with the calendars and work week of other countries foreign to them?

Requesting freedom to worship on the seventh day in the West has often gone to U.S. courts and been well received.  But the U.S. courts and U.S. religious liberty laws cannot apply to other countries.  Does Kenya have such laws in place on which to arbitrate?