Found it myself,zic.8.txt

thanks

Jim Marvel

Software Engineer II 
Honeywell ESEA CMS
8323 Lindbergh Court
Sarasota FL 34243
Phone - 941.360.6209 (alt: 941.360.6213)
Fax - 941.355.9241
Jim.Marvel@Honeywell.com

From: Marvel, Jim (CPCOE)
Sent: Tuesday, January 21, 2014 9:53 AM
To: 'tz@iana.org'
Subject: Please direct me to an explanantion

Hi,

# Zone  NAME                                   GMTOFF              RULES                   FORMAT              [UNTIL]

Zone      Europe/London                                -0:01:15                -                              LMT                       1847 Dec  1 0:00s

                                                               0:00                        GB-Eire                 %s                          1968 Oct 27

                                                               1:00                        -                              BST                         1971 Oct 31 2:00u

Please direct me to an explanation of the “s” and the “u” in the rules.

I looked within the tz_code and tz_data but was unable to find an explanation.

Thanks

Jim Marvel

Software Engineer II 
Honeywell ESEA CMS
8323 Lindbergh Court
Sarasota FL 34243
Phone - 941.360.6209 (alt: 941.360.6213)
Fax - 941.355.9241
Jim.Marvel@Honeywell.com