When daylight savings time is kept, the times of tide and current calculations must be adjusted. One way of doing this is to __________.
A
add 15° to the standard meridian when calculating the time differences
B
apply no correction as the times at the reference stations are adjusted for daylight savings time
C
add one hour to the times listed for the reference stations
D
subtract one hour from the times listed for the subordinate stations
E
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