Opening Hours & Library Holidays

Sundays, National holidays, the year-end and New Year's holidays and the third Wednesday of the month (for refiling).

Additionally, the Library could be closed without prior notice in case of natural disasters or other public emergencies. Announcements are posted on the National Diet Library website and our official Twitter account.

• *To use the Rare Books and Old Materials Room on service Saturdays, it is necessary to make a reservation.

• September 2023

  Library Holiday

  3rd, 10th, 17th, 18th, 20th, 23rd, 24th

  Sun	Mon	Tue	Wed	Thu	Fri	Sat
  					1	2
  3	4	5	6	7	8	9
  10	11	12	13	14	15	16
  17	18	19	20	21	22	23
  24	25	26	27	28	29	30

• October 2023

  Library Holiday

  1st, 8th, 9th, 15th, 18th, 22nd, 29th

  Sun	Mon	Tue	Wed	Thu	Fri	Sat
  1	2	3	4	5	6	7
  8	9	10	11	12	13	14
  15	16	17	18	19	20	21
  22	23	24	25	26	27	28
  29	30	31

For the yearly schedule of Library closure, please see the Library Calendar.

Regular library hours are as follows.

Additionally, the National Diet Library is sometimes forced to change its library hours temporarily due to weather impacts on traffic conditions. Announcements are posted on the National Diet Library website and our official Twitter account.

*Some special materials rooms have different service hours. For more information, please see the guide, "Special Materials Rooms and Reading Rooms."