North Pole, Specific Dates Every Two Weeks Movie (11 MB) Click on picture to view movie for a particular year.

January 1

January 15

February 1

February 15

March 1

March 15

April 1

April 15

May 1

May 15

June 1

June 15

July 1

July 15

August 1

August 15

September 1

September 15

October 1

October 15

November 1

November 15

December 1

December 15

NASA's Total Ozone Mapping Spectrometer (TOMS) instruments provided global measurements of total column ozone on a daily basis. Nimbus-7 TOMS and Meteor-3 TOMS together operated from November 1978 -December 1994. A gap of one and a half dates followed. ADEOS TOMS provided data from August 17, 1996 until June 29, 1997 when the spacecraft failed. Earth Probe TOMS was launched on July 2, 1996 and provided data through 2005.