orthogonal cases of log --date option

I can use "git log --date=iso" to get YYYY-MM-DD format for dates, or "git log --date=local" to force the dates to use my local time zone, but if I use _both_ of these options together, it uses only the last one, and ignores any preceding --date (even those in this case, the two --date options affect orthogonal properties of dates). Is there a way to get YYYY-MM-DD format dates, but in my local time-zone?

Thanks,

-Miles