<dependency> <groupId>net.time4j</groupId> <artifactId>time4j-core</artifactId> <version>4.38</version> </dependency> gradle implementation 'net.time4j:time4j-core:4.38' System.setProperty("net.time4j.scale", "gregorian"); System.setProperty("net.time4j.timezone", "Asia/Shanghai"); PlainTimestamp now = SystemClock.inZonalview().now(); ChronoFormatter<PlainTimestamp> formatter = ChronoFormatter.ofPattern("yyyy-MM-dd HH:mm:ss", PlainTimestamp.axis()); PlainTimestamp parsed = formatter.parse("2021-09-27 12:30:00"); Duration diff = PlainDate.duration(now.toLocalDate(), parsed.toLocalDate());