To enter the Library, it is necessary to agree to the Instructions for the On-site Use of the National Diet Library.

The opening hours of the National Diet Library are 9:30 to 19:00 (17:00 on Saturday). The time limit for requesting materials and same-day photocopy service is 18:00 (16:00 on Saturday). Also considering the time needed to find material titles and call numbers, your sufficiently early visit is recommended.

Although there is a parking lot for 29 cars in front of the NDL visitors' entrance, visitors are recommended to use public transport. Two parking spaces is allocated exclusively for the physically handicapped. Bicycles and motorcycles can be parked in the 'two-wheelers' corner of the parking lot.
We regret that the NDL cannot provide information about whether the parking lot is full.

• *Visitors are not allowed to carry into the Library bags, envelopes and any other opaque containers 7x10 inches (17-25cm) or larger. There is no size restriction to transparent bags and acrylic cases, in which you are recommended to put writing instruments, purses, valuables.
• *Please switch portable phones to pulse mode in the NDL building and use them only in designated areas.
• *Personal computers, word processor, sound-generating pocket calculators may be used in certain designated sections of the Library.
• *Smoking is not allowed in the Library, except in the smoking area on the walkway between the Main Building and the Annex on the second floor.
• *Visitors carrying a lunch or other foods with them may eat in the cafeteria on the sixth floor. Eating and drinking while using a library material are prohibited any time.

The user card issued upon entering the Library is required when searching, requesting receiving, returning and having materials photocopied; you should not lose or damage it. (Caution! Do not leave your user card in the OPAC terminals, etc.). Please notify the staff at the nearest counter or at the Reception Desk if the card is lost.