Travel Reference
In-Depth Information
Time
All areas covered in this guide operate on US Mountain Time, which is -7 hours GMT. America subscribes to
daylight savings time (DST): on the first Sunday in April clocks are set one hour ahead; on the last Sunday of
October, clocks are turned back one hour.
Public Holidays
On the following national public holidays, banks, schools and post offices are closed, and
transportation, museums and other services operate on a Sunday schedule. Park visitor
centers and facilities are open on the public holidays that fall within their normal opening
dates. Holidays falling on a weekend are usually observed the following Monday.
January 1 New Year's Day
Third Monday in January Martin Luther King Jr Day
Third Monday in February Presidents' Day
Last Monday in May Memorial Day
July 4 Independence Day
First Monday in September Labor Day
Second Monday in October Columbus Day
November 11 Veterans' Day
Fourth Thursday in November Thanksgiving
December 25 Christmas Day
Telephone
Cell phone coverage is good in Grand Teton (except for the canyons) but patchy in much
of Yellowstone, especially outside the major junctions. Bring yours along, but don't rely
on it for emergency communications.
There are pay phones at most junctions but they can be expensive, especially for collect
calls. Yellowstone General Stores sell prepaid phone cards that offer decent value.
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