If a pilot is converting standard time to UTC time and is given the time 1730 UTC, what would EST be?

If a pilot is converting standard time to UTC time and is given the time 1730 UTC, what would EST be?

• A. 1130 hours
• B. 1230 hours
• C. 1330 hours
• D. 1430 hours

Answer: (B)

Converting UTC to local standard time uses a fixed offset between UTC and the time zone. Eastern Standard Time is five hours behind UTC. So, for 1730 UTC, you subtract five hours: 17:30 minus 5:00 equals 12:30, which is 1230 in 24-hour format. This assumes standard time (EST). If daylight saving were in effect, the offset would be four hours behind UTC, giving 1330, but that would be Eastern Daylight Time, not EST.

Converting UTC to local standard time uses a fixed offset between UTC and the time zone. Eastern Standard Time is five hours behind UTC. So, for 1730 UTC, you subtract five hours: 17:30 minus 5:00 equals 12:30, which is 1230 in 24-hour format. This assumes standard time (EST). If daylight saving were in effect, the offset would be four hours behind UTC, giving 1330, but that would be Eastern Daylight Time, not EST.