１．The maintenance date and time
It is up to one minute between 0:00 a.m. and 3:00 a.m. on Sunday, December 13, 2020
※We may postpone conduct day by the official announcement situation of weather warning and the outbreak situation of sudden large-scale disaster, other reasons. In that case, we will tell separately.
２．Influence by maintenance
In the maintenance date and time, all Web sites, use, reading of all systems of Yokohama-shi is not possible.