I N G E N I E U R P E R P E T U A L C A L E N D A R D I G I TA L D AT E - M O N T H
— 3 3 —
C R O S S I N G T I M E Z O N E S A N D
T H E I N T E R N AT I O N A L D AT E L I N E W I T H
T H E I N G E N I E U R P E R P E T U A L C A L E N D A R
D I G I TA L D AT E - M O N T H
Setting when crossing time zones:
– When crossing time zones in an easterly direction, you should
simply set the time forwards to the new local time.
– When crossing time zones in a westerly direction, you can set
the hands of your watch back to the actual time of day. When
doing this, however, you must not move back into the calen
dar’s automatic switching phase, i.e. beyond 2 a.m. If this
situation occurs when you are travelling west, you should set
GM
T
-11 -10 -9 -8
-7 -6 -5 -4
-3 -2
-1
0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +10 +11 +12
INTERNA
TIONAL
DA
TE LINE
INTERNA
TIONAL
DA
TE LINE
