Answer: timezones

AnswerCrossword Clue
TIMEZONES

Clock-setting matters

TIMEZONES

Pacific Standard and Central Daylight

TIMEZONES

Atlantic and Pacific, e.g.

TIMEZONES
Twenty-four sections of the earth.
TIMEZONES
Certain global divisions.
TIMEZONESGlobal divisions.
TIMEZONESCrossing them can affect you