Internet Archive Wayback Machine

http://www.nap.edu/ has been crawled 1,134 times going all the way back to June 6, 1997.

A crawl can be a duplicate of the last one. It happens about 25% of the time across 420,000,000 websites. FAQ


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Jan
						January 1, 2011 1 snapshot 17:40:06 1
January 2, 2011 1 snapshot 10:43:49 2	3	4	5	January 6, 2011 2 snapshots 03:42:43 21:45:30 6	January 7, 2011 2 snapshots 00:02:04 22:48:09 7	8
9	10	January 11, 2011 2 snapshots 05:12:18 12:55:31 11	January 12, 2011 1 snapshot 23:11:07 12	13	14	15
January 16, 2011 1 snapshot 12:18:37 16	17	18	19	January 20, 2011 1 snapshot 06:09:22 20	21	January 22, 2011 1 snapshot 20:26:09 22
23	24	25	January 26, 2011 1 snapshot 20:32:24 26	27	January 28, 2011 1 snapshot 22:15:58 28	January 29, 2011 3 snapshots 05:16:25 06:48:41 08:55:19 29
January 30, 2011 1 snapshot 22:52:41 30	January 31, 2011 2 snapshots 12:56:41 22:40:32 31

Feb
		1	February 2, 2011 3 snapshots 15:26:35 19:37:00 21:50:50 2	February 3, 2011 4 snapshots 00:14:35 02:27:45 08:42:19 16:33:12 3	February 4, 2011 1 snapshot 13:07:46 4	February 5, 2011 3 snapshots 00:41:31 06:58:00 07:59:54 5
February 6, 2011 1 snapshot 10:34:20 6	February 7, 2011 3 snapshots 16:06:29 20:01:10 20:14:26 7	February 8, 2011 3 snapshots 02:12:25 15:49:40 20:27:47 8	9	February 10, 2011 1 snapshot 02:44:38 10	February 11, 2011 1 snapshot 10:06:08 11	12
13	14	15	16	February 17, 2011 1 snapshot 06:27:43 17	February 18, 2011 1 snapshot 10:57:03 18	February 19, 2011 1 snapshot 02:22:16 19
20	February 21, 2011 1 snapshot 16:44:38 21	22	23	February 24, 2011 2 snapshots 04:27:01 06:49:59 24	February 25, 2011 1 snapshot 18:12:48 25	26
27	28

Mar
		1	March 2, 2011 1 snapshot 19:47:02 2	3	March 4, 2011 1 snapshot 08:00:30 4	5
March 6, 2011 1 snapshot 12:22:26 6	7	8	March 9, 2011 1 snapshot 18:13:55 9	March 10, 2011 1 snapshot 06:30:24 10	11	12
13	14	15	16	March 17, 2011 1 snapshot 19:58:44 17	18	19
20	21	22	23	March 24, 2011 1 snapshot 04:55:45 24	March 25, 2011 1 snapshot 03:07:42 25	March 26, 2011 1 snapshot 20:00:25 26
27	28	29	30	March 31, 2011 1 snapshot 00:13:47 31

Apr
					April 1, 2011 1 snapshot 21:01:53 1	April 2, 2011 1 snapshot 12:15:18 2
3	4	5	April 6, 2011 1 snapshot 19:55:14 6	April 7, 2011 1 snapshot 05:08:36 7	8	9
10	April 11, 2011 1 snapshot 14:25:00 11	12	13	April 14, 2011 1 snapshot 04:35:22 14	15	16
17	18	19	April 20, 2011 1 snapshot 15:48:40 20	21	22	23
April 24, 2011 1 snapshot 04:19:57 24	25	26	April 27, 2011 1 snapshot 23:17:43 27	28	29	30

May
1	2	3	4	May 5, 2011 2 snapshots 00:05:16 15:06:31 5	May 6, 2011 1 snapshot 06:58:43 6	7
8	May 9, 2011 1 snapshot 15:03:26 9	May 10, 2011 1 snapshot 02:43:12 10	11	May 12, 2011 3 snapshots 11:25:46 20:55:36 22:13:44 12	13	May 14, 2011 1 snapshot 02:10:13 14
15	16	17	May 18, 2011 1 snapshot 16:56:30 18	19	20	21
22	23	May 24, 2011 1 snapshot 05:58:16 24	May 25, 2011 1 snapshot 14:09:48 25	26	May 27, 2011 1 snapshot 07:03:25 27	28
29	30	31

Jun
			June 1, 2011 1 snapshot 09:28:48 1	June 2, 2011 1 snapshot 16:38:57 2	3	4
5	6	7	June 8, 2011 1 snapshot 19:12:05 8	9	10	11
12	13	14	June 15, 2011 1 snapshot 14:26:51 15	16	17	18
19	20	21	June 22, 2011 2 snapshots 10:52:40 21:59:06 22	23	June 24, 2011 1 snapshot 14:44:46 24	25
26	27	28	29	June 30, 2011 2 snapshots 06:20:53 11:10:28 30

Jul
					1	July 2, 2011 1 snapshot 13:44:54 2
3	4	5	July 6, 2011 2 snapshots 20:18:02 22:15:33 6	7	July 8, 2011 1 snapshot 14:35:15 8	9
July 10, 2011 1 snapshot 03:01:24 10	11	12	13	July 14, 2011 1 snapshot 14:06:29 14	15	16
17	18	19	20	July 21, 2011 1 snapshot 16:08:13 21	22	23
July 24, 2011 1 snapshot 04:20:23 24	25	July 26, 2011 2 snapshots 09:18:43 09:26:22 26	27	28	29	30
31

Aug
	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

Sep
				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

Oct
						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

Nov
		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

Dec
				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

Note

This calendar view maps the number of times http://www.nap.edu/ was crawled by the Wayback Machine, not how many times the site was actually updated. More info in the FAQ.

January 1, 2011

January 2, 2011

January 6, 2011

January 7, 2011

January 11, 2011

January 12, 2011

January 16, 2011

January 20, 2011

January 22, 2011

January 26, 2011

January 28, 2011

January 29, 2011

January 30, 2011

January 31, 2011

February 2, 2011

February 3, 2011

February 4, 2011

February 5, 2011

February 6, 2011

February 7, 2011

February 8, 2011

February 10, 2011

February 11, 2011

February 17, 2011

February 18, 2011

February 19, 2011

February 21, 2011

February 24, 2011

February 25, 2011

March 2, 2011

March 4, 2011

March 6, 2011

March 9, 2011

March 10, 2011

March 17, 2011

March 24, 2011

March 25, 2011

March 26, 2011

March 31, 2011

April 1, 2011

April 2, 2011

April 6, 2011

April 7, 2011

April 11, 2011

April 14, 2011

April 20, 2011

April 24, 2011

April 27, 2011

May 5, 2011

May 6, 2011

May 9, 2011

May 10, 2011

May 12, 2011

May 14, 2011

May 18, 2011

May 24, 2011

May 25, 2011

May 27, 2011

June 1, 2011

June 2, 2011

June 8, 2011

June 15, 2011

June 22, 2011

June 24, 2011

June 30, 2011

July 2, 2011

July 6, 2011

July 8, 2011

July 10, 2011

July 14, 2011

July 21, 2011

July 24, 2011

July 26, 2011

Note