The Finnish coverage certification is used to assign foreign (F) quarters of coverage
            to the FCER.
         
         
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                  • 
                     All periods of coverage certified by Finland are creditable unless they are already
                        credited as U.S. quarters of coverage.
                      
 
 
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                  • 
                     Coverage in a “FROM-TO” period may start prior to the beginning date of a particular system. A worker covered
                        under a particular system when it began is also given credit for coverage under that
                        system back to the date the covered work began as long as the work was the same type
                        of work and the period was continuous.
                      
 
 
Effective May 26, 2012, the duration of the insurance periods show months and days
            as follows:
         
         
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                  • 
                     Insurance periods prior to December 31, 2004, show in months and days (if there are
                        days that exceed full months),
                      
 
 
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                  • 
                     Insurance periods after January 1, 2005, are always in full 12 months/year (if the
                        person has earnings during the year in question), and
                      
 
 
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                  • 
                     The insurance periods between March 5, 2012 and May 25, 2012, show number of days
                        only.