The document provides steps for calculating time differences and longitude differences between two locations:
1) Find the longitude difference between the two places.
2) Convert the longitude difference to time using 1 hour = 15 degrees.
3) Adjust the calculated time based on whether the longitude is East or West - add time if East, subtract if West.
Z Score,T Score, Percential Rank and Box Plot Graph
SUEC 高中 Adv Maths (Earth as Sphere) (Part 1).pptx
1.
2. 𝒑𝒈 𝟕𝟖
Step 1: Find out the difference in
longitudes between two places given.
Step 2: Convert or change the difference in
longitude to time, 15° = 1 hour
Step 3: Adjust the time according to the
position of the longitude
if it is E, we add
if it is W, we subtract time.
3. 𝒑𝒈 𝟕𝟖 − 𝟕𝟗
Step 1: Find out the difference in
longitudes between two places given.
Step 2: Convert or change the difference in
longitude to time, 15° = 1 hour
Step 3: Adjust the time according to the
position of the longitude
if it is E, we add
if it is W, we subtract time.
140
4. 𝒑𝒈 𝟕𝟗
Step 1: Find out the difference in
longitudes between two places given.
Step 2: Convert or change the difference in
longitude to time, 15° = 1 hour
Step 3: Adjust the time according to the
position of the longitude
if it is E, we add
if it is W, we subtract time.
6. 𝒑𝒈 𝟕𝟗
𝑡𝑖𝑚𝑒 𝑑𝑖𝑓𝑓𝑒𝑟𝑒𝑛𝑐𝑒 = 12.25 − 3.45 = 8.67 ℎ𝑟𝑠
𝑑𝑖𝑓𝑓𝑒𝑟𝑒𝑛𝑐𝑒 𝑖𝑛 𝑙𝑜𝑛𝑔𝑖𝑡𝑢𝑑𝑒𝑠 = 8.67 ℎ𝑟𝑠 × 15 ° = 130 °
𝑃 𝑙𝑜𝑛𝑔𝑖𝑡𝑢𝑑𝑒 = 130 ° − 125 °
= 5 ° 𝐸
if local time of place x is ahead of the time at the given longitude, then the place is E of the given longitude
if local time of place x is behind of the time at the given longitude, then the place is W of the given
longitude
𝑑𝑖𝑓𝑓𝑒𝑟𝑒𝑛𝑐𝑒 𝑖𝑛 𝑙𝑜𝑛𝑔𝑖𝑡𝑢𝑑𝑒𝑠 = 𝑃 𝑙𝑜𝑛𝑔𝑖𝑡𝑢𝑑𝑒 + 𝑄 𝑙𝑜𝑛𝑔𝑖𝑡𝑢𝑑𝑒
𝒔𝒊𝒏𝒄𝒆 𝑷 𝒊𝒔 𝑬, 𝑸 𝒊𝒔 𝑾, 𝒘𝒆 𝒂𝒅𝒅 𝒕𝒉𝒆 𝒅𝒊𝒇𝒇𝒆𝒓𝒆𝒏𝒄𝒆 𝒊𝒏 𝒍𝒐𝒏𝒈𝒊𝒕𝒖𝒅𝒆𝒔