Test 1


The floor of Jul 02 12:00 is NULL

Test 2

Apr 14 12:00 (height: 2)
┝━╸L: Feb 17 12:00 (height: 1)
│     ┝━╸L: Jan 04 12:00 (height: 0)
│     ┕━╸R: Mar 29 12:00 (height: 0)
┕━╸R: Jun 06 12:00 (height: 1)
      ┝━╸L: May 19 12:00 (height: 0)
      ┕━╸R: Jul 07 12:00 (height: 0)

The floor of Jan 01 12:00 is NULL
The floor of Jan 09 12:00 is Jan 04 12:00
The floor of Mar 15 12:00 is Feb 17 12:00
The floor of Apr 01 12:00 is Mar 29 12:00
The floor of Apr 27 12:00 is Apr 14 12:00
The floor of May 30 12:00 is May 19 12:00
The floor of Jun 22 12:00 is Jun 06 12:00
The floor of Jul 12 12:00 is Jul 07 12:00