When daylight savings time is kept, the...

Question 1 / 2707066636ee928f7522a1c519509

Question 1 of 2707066636ee928f7522a1c519509

When daylight savings time is kept, the times of tide and current calculations must be adjusted. How can this be accomplished?

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Question 1 of 27070

When daylight savings time is kept, the times of tide and current calculations must be adjusted. How can this be accomplished?

🔍 Key Concepts

• Time Zone and Standard Meridian used in tide/current tables • How Daylight Saving Time (DST) shifts clock time relative to standard time • Difference between reference stations and subordinate stations in tide/current tables

💭 Think About

• Ask yourself: Are the times printed in the tide/current tables based on standard time or daylight saving time? • Think about what actually changes when we go to daylight saving time: do the tables change, or does just the clock on the wall change? • Consider whether any correction should be applied to all stations, only reference stations, or only subordinate stations.

✅ Before You Answer

• Verify whether tide and current tables are published in standard time or daylight saving time for the whole year. • Check if any note in the tables says that the user must make an adjustment when DST is in effect. • Confirm whether the correction, if needed, would be the same sign (add or subtract) for all listed times in the tables.

Question 1 of 27070

When daylight savings time is kept, the times of tide and current calculations must be adjusted. How can this be accomplished?

Apply no correction as the times at the reference stations are adjusted for daylight savings time

Add 15° to the standard meridian when calculating the time differences

Add one hour to the times listed for the reference stations

Subtract one hour from the times listed for the subordinate stations

Question 1 / 2707066636ee928f7522a1c519509

Question 1 of 2707066636ee928f7522a1c519509

When daylight savings time is kept, the times of tide and current calculations must be adjusted. How can this be accomplished?

Back

Question 1 of 27070

When daylight savings time is kept, the times of tide and current calculations must be adjusted. How can this be accomplished?