The move-in day for SATO-homes is the first working day of the month. If that day falls on a weekend or public holiday, you will get the keys on the following working day after 12:00 midday.
The moving-out day is according to the terms of your lease either the date of the termination of your lease, or the business day following that date. If your moving-out day is the latter, the apartment should be fully available for use by the new resident (or in a renovation situation by SATO) no later than at 12:00 midday on the moving-out day. Please be careful, and check your specific moving-out day from the terms of your own lease.