GMTOFF            670 lib/common/iso8601.c         int h_offset = GMTOFF(now_tm) / HOUR_SECONDS;
GMTOFF            671 lib/common/iso8601.c         int m_offset = (GMTOFF(now_tm) - (HOUR_SECONDS * h_offset)) / 60;
GMTOFF           1249 lib/common/iso8601.c     h_offset = GMTOFF(source) / HOUR_SECONDS;
GMTOFF           1250 lib/common/iso8601.c     m_offset = (GMTOFF(source) - (HOUR_SECONDS * h_offset)) / 60;
GMTOFF           1252 lib/common/iso8601.c               GMTOFF(source), h_offset, m_offset);