### Description The following code: ```php <?php echo DateTime::createFromTimestamp(0.999_999_9)->format('s.u'), "\n"; ``` Resulted in this output: ``` 00.1000000 ``` But I expected this output instead: ``` 01.000000 or 00.999999 ``` Though some don't agree, I prefer to 00.999999 than 01.000000 for date and time. 23:59:59.999_999_9 is not technically tomorrow. ### PHP Version dev-master 5e242fe ### Operating System irrelevant