TIME DIFFERENCES

17 May 1989 - 23:46 (17/05/89 - 23:46) can be numerically written as 1705892346, where each digit from 0 to 9 is used exactly once. What is the maximum numerical difference between two different time information having this property?

Note: 24-hour format is used therefore the time part is between 00:00 and 23:59.

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