Grids and Datums 2011 – Present

Since September 1998, the Grids and Datums column from each issue of PE&RS has been made available on the web site. They are listed below in calendar order.

The following files are in Adobe Acrobat PDF format and require Adobe Acrobat Reader in order to be viewed.  A free version of Adobe Acrobat can be downloaded from


The Former Yugoslavia (January)

Republic of Columbia (February)

Canada (March)



Republic of the Marshall Islands (January)

Principality of Andorra (February)

Kingdom of Bhutan (March)

Republic of Sudan (April)

Datum Origins with Google Earth (May)

Federal Republic of Germany (June)

Democratic Repuglic of Timor-Leste (July)

Principality of Monaco (August)

Kingdom of Swaziland (September)

Russian Federation (October)

United States of America (November)


São Tomé & Príncipe (January)

The World (February)

Republic of India (March)

Overseas Lands of French Polynesia (April)

Kingdom of Tonga (May)

Solomon Islands (June)

Federated States of Micronesia (July)

Republic of Chad (August)

Kyrgyz Republic (September)

Republic of Armenia (October)

Republic of Iraq (November)

Republic of Tajikstan (December)


Republic of the Gambia (January)

Republic of Belarus (February)

Boznia and Herzegovina (March)

Republic of Rwanda (April)

Republic of Moldova (May)

Kingdom of Nepal (June)

Republic of Serbia (July)

Islamic Republic of Iran (August)

Federal Republic of Somalia (September)

State of Burma (October)

Togolese Republic (November)


Republic of Albania (January)

Republic of Sierra Leone (February)

Central African Republic (March)

Commonwealth of Dominica (April)

Republic of Macedonia (May)

Georgia (June)

Republic of Croatia (July)

Republic of Uganda (August)

Republic of South Africa (September)

Maps in the Middle of Nowhere (October)

United Mexican States (November)

Turkmenistan (December)


Republic of Guinea-bissau (January)

Kingdom of Thailand (February)

Republic of Liberia (March)

Principality of Liechtenstein (April)

Republic of Malawi (May)

Montserrat (June)

Slovak Republic (July)

The Islands of Samoa (August)

Republic of Haïti (September)

Republic of Slovenia (October)

Republic of Niger (November)

Negara Brunei Darussalam (December)