TM 1-1510-225-10 3D-69 NOTE You   may   enter   a   time   different   than   the actual time in either the top or bottom time display.      When   either   the   top   or   bottom time     is     changed,     the     other     one     also changes to show the correct corresponding time. 1.   Select  the  CAL  6  page  on  the  left  side.   The  first  time  the  CAL  6  page  is  viewed after the KLN 90B has been turned on, the top    time    showing    will    be    the    current system.  It will be the same time displayed on the SET  2  page.    The  bottom  time  will be   the   current   time   referenced   to   the Coordinated   Universal   Time   (UTC)   time zone. 2.   Press the left  CRSR button to turn on the left cursor function. 3.   Rotate  the  left  outer  knob  to  position  the cursor over the top time zone abbreviation. 4.   Turn   the   left   inner   knob   to   select   the desired time zone. 5.   Rotate  the  left  outer  knob  to  position  the cursor over the bottom time zone abbreviation and use the left inner knob to select    the    desired    time    zone.        The corresponding time is now displayed. 6.   Press the left  CRSR button to turn off the cursor function. g.  The Calculator 7 Page.   The  CAL  7  page  is used to display the times of sunrise and sunset for any waypoint in the published or user database.  Refer to Figure   3D-102.      It   can   do   this   for   any   date   up   to 31 December 2087. CAL 7 SUNRISE/SET KABQ   01 MAY 96         MDT RISE  06:16 SET   19:51 Figure 3D-102.  CAL 7 Page 1.   Select  the  CAL  7  page  on  the  left  side.   The  first  time  the  CAL  7  page  is  selected after   the   KLN    90B    is    turned    on,    the waypoint  identifier  defaults  to  the  current destination,     the     date     defaults     to     the current date, and the time zone defaults to the   system   time   zone.      Each   of   these three items may be changed.  The sunrise and  sunset  are  displayed  at  the bottom of the page. NOTE The   time   zone   initially   displayed   is   the system time zone.  This is the same as the one  displayed  on  the  SET  2  page.    Note that  the  time  zone  displayed  may  not  be appropriate for the waypoint shown. 2.   Press the left  CRSR button to turn on the cursor function. 3.   If desired, select another waypoint identifier   using   the   left   inner   and   outer knobs.  Press the   ENT button to view the waypoint  page  for  the  waypoint  entered.   Press the   ENT  button  again  to  approve the waypoint page. 4.   If   desired,  select  another  date  using  the left inner and outer knobs.  Press the  ENT button to enter the date. 5.   If desired select, another time zone.  The sunrise and sunset times for the selected waypoint,  date,  and  time  zone  are  now displayed. 6.   Press the left  CRSR button to turn off the cursor function. 3D-27.  WAYPOINTS. a.   Reference Waypoints.   Creating a reference waypoint is a method of adding a waypoint to any flight plan.    The  reference  waypoint  lies  on  the  great  circle route  between  two  other  waypoints  in  the  flight  plan.   The  point  where  the  reference  waypoint  lies  on  the great  circle  route  is  the  point  where  the  route  passes closest  to  a  pilot  designated  point.    Refer  to  Figure 3D-103.