Java 9+
LocalDate.ofInstant(...) arrived in Java 9.
Instant instant = Instant.parse("2020-01-23T00:00:00Z");
ZoneId zone = ZoneId.of("America/Edmonton");
LocalDate date = LocalDate.ofInstant(instant, zone);
See code run live at IdeOne.com.
Notice the date is 22nd rather than 23rd as that time zone uses an offset several hours before UTC.
2020-01-22
Java 8
If you are using Java 8, then you could use ZonedDateTime‘s toLocalDate() method:
yourInstant.atZone(yourZoneId).toLocalDate()