Not really. It would mean the Sunday's clock go to 24:59 before jumping to 00:00 on Sunday. The official time the DST end is "00:00am on the next day after the second Saturday of September". So it isn't ending before the day change.

2018-09-08 15:36 "Paul Eggert" <eggert@cs.ucla.edu> wrote:

Phake Nick wrote:
> The law cited in the latest commit do say the DST en at 00:00 on the day
> after the second Saturday in September, however the second line of the law
> write that "the Second Saturday in September would have 25 hours in a day".

Those mean the same thing. Since DST ends at 00:00 the day after Saturday, the
clock jumps back from 24:00 on Saturday to 23:00 on Saturday, and Saturday has
25 hours.