time-tai->time-utc

[procedure] time-tai->date time [tz-offset]

[procedure] time-tai->julian-day time

[procedure] time-tai->modified-julian-day time

[procedure] time-tai->time-monotonic time

[procedure] time-tai->time-monotonic! time

[procedure] time-tai->time-utc time

[procedure] time-tai->time-utc! time

SRFI-19: Conversion procedures.