What is the period of time from around 1008 DST (ZD +4) at Canapitsit Channel, MA, on 7 August 1983, in which the current does not exceed 0.4 knot?
• Use the Tidal Current Tables for Canapitsit Channel, MA on 7 August 1983 • Understand how to find the period of slack water / minimal current around a given time • Convert between standard time and daylight saving time (DST) with the given zone description (ZD +4)
• First, determine the exact time of minimum current (or slack) closest to 1008 DST from the Tidal Current Tables • Then, look at the current speeds in the table before and after that time to find when the current first drops to and last remains at 0.4 knot or less • Compare that interval with each answer choice and see which one fits entirely within the 0.4‑knot‑or‑less window
• Verify you are using the correct Canapitsit Channel station and year (1983) in the Tidal Current Tables • Double‑check the time correction for DST and ZD +4 from the table’s reference (standard) time to local time • Confirm on the current table that throughout the chosen interval, the current speed never exceeds 0.4 knot, including the endpoints of the period
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