Pagerank更新时间表
Page Rank Update List History - PageRank - PR
Page Rank Update Table Definitions
TBPR Update : Toolbar PageRank Update - across the board update of the PR on the toolbar.
GDPR Update : Google Directory Update - update of the PR values in the Google Directory.
BL Update : Backlink Update - update of the backline values seen with the link: command.
Algo Update : Algorithm Update - a major update in the Ranking algorithm that causes a large SERP change.
TB Program Update : Toolbar Program Update - a software update to the Google toolbar that displays PR.
Days : Days between toolbar PR updates.
Page Rank Update List History Table
| Year | Date | Info | Days |
| 2005 | Jul 15 | TPR Update | 78 |
| 2005 | Jun 11 | GDPR Update | 11 |
| 2005 | May 24 | GDPR & BL Update | 32 |
| 2005 | Apr 22 | TPR, GDPR & BL Update | 111 |
| 2005 | Mar 04 | BL Update | |
| 2005 | Mar 03 | GDPR Update | 28 |
| 2005 | Feb 23 | TB Program Update | |
| 2005 | Feb 04 | GDPR Update | 24 |
| 2005 | Feb 03 | BL & Algo Update | |
| 2005 | Jan 10 | GDPR Update | 77 |
| 2005 | Jan 1 | TBPR & BL Update | 87 |
| 2004 | Dec 16 | BL Update | |
| 2004 | Nov 25 | BL Update | |
| 2004 | Oct 28 | GDPR Update? | ?? |
| 2004 | Oct 28 | BL Update | |
| 2004 | Oct 18 | BL Update Rolled Back | |
| 2004 | Oct 17 | GDPR Update | 67 |
| 2004 | Oct 16 | BL Update | |
| 2004 | Oct 6 | TBPR Update; No BL Update | 106 |
| 2004 | Sept 10 | BL Update | |
| 2004 | Sept 8 | TB Program Update | |
| 2004 | Aug 30 | BL Update | |
| 2004 | Aug 10 | GDPR Update | 158? |
| 2004 | Aug 9 | BL Update | |
| 2004 | Jul 16 | BL Update | |
| 2004 | Jun 22 | TBPR & BL Update | 22 |
| 2004 | May 31 | TBPR & BL Update | 38 |
| 2004 | Apr 23 | TBPR & BL Update | 16 |
| 2004 | Apr 7 | TBPR & BL Update | 22 |
| 2004 | Mar 16 | TBPR, GDPR & BL Update | 50 |
| 2004 | Feb 11 | Brandy: Algo Update | |
| 2004 | Jan 26 | TBPR & BL Update | 15 |
| 2004 | Jan 11 | Austin: TBPR & BL Update | 19 |
| 2003 | Dec 23 | TBPR & BL Update | 17 |
| 2003 | Dec 6 | TBPR Update | 20 |
| 2003 | Nov 16 | Florida: TBPR, BL & Algo Update | 21 |
| 2003 | Oct 26 | 35 | |
| 2003 | Oct 2 | GDPR Update | |
| 2003 | Sept 21 | 23 | |
| 2003 | Aug 29 | 21 | |
| 2003 | Aug 8 | 54 | |
| 2003 | Jun 15 | 40 | |
| 2003 | May 6 | 25 | |
| 2003 | Apr 11 | 36 | |
| 2003 | Mar 6 | 41 | |
| 2003 | Jan 25 | 24 | |
| 2003 | Jan 1 | 35 | |
| 2002 | Nov 27 | 27 | |
| 2002 | Oct 31 | TBPR & BL Update | 35 |
| 2002 | Sept 26 | TBPR GDPR & BL Update | 36 |
| 2002 | Aug 21 | TBPR GDPR & BL Update | 27 |
| 2002 | Jul 25 | TBPR & BL Update | 32 |
| 2002 | Jun 23 | TBPR & BL Update | 30 |
| 2002 | May 24 | 29 | |
| 2002 | Apr 25 | 19 | |
| 2002 | Apr 6 | 45 | |
| 2002 | Feb 20 | 26 | |
| 2002 | Jan 25 | 29 | |
| 2001 | Dec 27 | 32 | |
| 2001 | Nov 25 | 28 | |
| 2001 | Oct 28 | 42 | |
| 2001 | Sept 16 | 28 | |
| 2001 | Aug 19 | 31 | |
| 2001 | Jul 19 | 30 | |
| 2001 | Jun 22 | 32 | |
| 2001 | May 21 | 28 | |
| 2001 | Apr 23 | 28 | |
| 2001 | Mar 26 | 35 | |
| 2001 | Feb 19 | 29 | |
| 2001 | Jan 21 | 33 | |
| 2000 | Dec 19 | 31 | |
| 2000 | Nov 18 | 27 | |
| 2000 | Oct 22 | 54 | |
| 2000 | Aug 29 | 34 | |
| 2000 | Jul 26 | Unknown |
2005年4月以前的资料来源：http://www.seocompany.ca/pagerank/page-rank-update-list.html
4月22日，cnseo.org首页PR从0升至3，itlearner.com首页PR从4升至5。