EDIT: jfoutz gives a much more realistic example: maybe California doesn't give up on DST altogether, but just moves the start date. Note this is not really abo

EDIT: jfoutz gives a much more realistic example: maybe California doesn't give up on DST altogether, but just moves the start date. Note this is not really about DST at all, but DST stories probably make the best examples. Another example could be that China decides to create East and West timezones.