Spanish original · English

Hover or tap underlined Spanish terms to see their translation and exam tip.

En aguas del Océano Índico cercanos a la Isla de Mauricio, al ser en Greenwich la hora civil de Greenwich (HCG)= 2230 del día 28 de Marzo, calculamos la hora civil del lugar y fecha en situación estimada= 24º 20,2’S 066º 20,0’E. Calculamos la hora civil (HCL) y fecha del lugar en dicha situación:In the Indian Ocean near Mauritius, when Greenwich civil time (HcG) is 2230 on 28 March, calculate the local civil time (HcL) and date at DR position 24º 20.2’ S, 066º 20.0’ E:

Show the answer

Correct answer: a) 025520 on 29 March 2020.

Why it is correct

Longitude 066º 20.0′ E equals 4h 25m 20s east of Greenwich. Adding 4h 25m 20s to 22h 30m 00s on 28 March gives 02h 55m 20s on 29 March.

Why the others are not

  • b) Fails to advance the date to the 29th past midnight and gets the seconds wrong.
  • c) Adds the wrong time interval and advances two days.
  • d) Subtracts the wrong interval and steps back to the 27th.

How to work it out in the exam

  1. 66º = 4h 24m and 20′ = 1m 20s; east of Greenwich adds to HcG.

Where this question comes from

Try it: Sight reduction

Pending instructor review. Machine translation, not reviewed.