Solar Noon Solar Time – Solar Noon – Sunrise Sunset
Earth’s Rotation • Earth Rotates ___oin 24 hours • 360o/24hrs = __oper hour
Standard Time Zones What is the amount of time difference between each time zone? • 1 hour • Every 15o longitude is a new time zone. • How many time zones are there? • 24 hours in one day… there are 24 time zones!
A chronometer is a clock set to the local time at Greenwich, just outside of London.
4th:- • If GMT is later in the day compared to local time – you are west • If GMT is earlier in the day compared to local time - you are east
East sees daylight first! West last to see daylight! Prime Meridian Sun
Example 1 • GMT = 2 pm • Local Time = 12 noon • What is your longitude? 2 hours*15° = 30° 2pm is later in the day than 12 noon - 30°W
Prime Meridian 2pm 12pm The Prime Meridian is later in the day than local time.
GMT = 8 am • Local Time = 12 noon • What is your Longitude?
Final Question • GMT = 10 pm • Local Time = 12 noon • What is your Longitude? http://www.polleverywhere.com/multiple_choice_polls/NTc3NDc4NTY1/web
Final Question • GMT = 10 pm • Local Time = 12 noon • What is your Longitude? -* -° =-° -