jan 1, 3023 - Due to the lunar tides decelerating the Earth's rotation, the average length of a solar day will be 1⁄30 SI second longer than it is today. To compensate, either a leap second will have to be added to the end of a day multiple times during each month, or one or more consecutive leap seconds will have to be added at the end of some or all months.
Added to timeline:
Date:
jan 1, 3023
Now
~ 997 years later