Question 157 of 513
1Z0-829 Practice Question: Handling Date, Time, Text, Numeric and Boolean Values
Exhibit
SELECT FROM_TZ(TIMESTAMP '2024-03-10 02:30:00', 'America/New_York') AT TIME ZONE 'UTC' FROM DUAL; Output: 10-MAR-24 07.30.00.000000 UTC
Refer to the exhibit. Which Java code correctly performs the equivalent timezone conversion?
⚠ Common exam trap
Oracle often tests the misconception that a simple UTC offset or LocalDateTime can be used to represent a time that falls within a DST gap, when in fact you must use ZonedDateTime with the correct ZoneId to trigger the proper offset adjustment.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
ZonedDateTime.of(2024,3,10,2,30,0,0,ZoneId.of("America/New_York")).withZoneSameInstant(ZoneOffset.UTC)
It explicitly constructs a ZonedDateTime for the given date and time in the America/New_York timezone, then converts it to UTC using withZoneSameInstant. This correctly accounts for the fact that on March 10, 2024, at 2:30 AM, clocks in New York were set forward to 3:30 AM EDT (UTC-4), so the equivalent UTC time is 6:30 AM, not 2:30 AM UTC.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
LocalDateTime.of(2024,3,10,2,30).atZone(ZoneOffset.UTC)
Why it's wrong here
Incorrect: This interprets the local time as UTC, not converting from New York.
- ✗
Instant.parse("2024-03-10T02:30:00Z")
Why it's wrong here
Incorrect: This parses a UTC instant, not converting from New York.
- ✗
OffsetDateTime.of(2024,3,10,2,30,0,0,ZoneOffset.UTC)
Why it's wrong here
Incorrect: This creates an OffsetDateTime in UTC without any conversion.
- ✓
ZonedDateTime.of(2024,3,10,2,30,0,0,ZoneId.of("America/New_York")).withZoneSameInstant(ZoneOffset.UTC)
Why this is correct
Correct: withZoneSameInstant converts to UTC while preserving the instant.
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Last reviewed: Jun 30, 2026
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