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1.1 Portability

This implementation assumes that time zone information is stored in the tzfile format. The default timezone is loaded from /etc/localtime. On non-POSIX systems, this will certainly give different results than the system time handling.

local-time currently supports subsecond precision clocks with allegro, cmucl, sbcl, abcl, and non-Windows ccl. All others will be able to retrieve the time with second precision using get-universal-time. You may add support for your own implementation by implementing the clock generic protocol documented here.