Databases all over the world. :) IMHO in Revelation God shortens the days by 1/3 so the faithful will survive. I really don’t think that’s enough. LOL
The Earth gets spun on it’s axis so that rotational axis speed is 16 hours and the moon seems to have been destroyed or has been cast away from it’s orbit. There is a shortening of the judgment period lest there be no life left on the Earth. I believe the two events are separate. A 16 hour rotational period would actually increase the number of days in a year though hours minutes and seconds would not change.