Python API Server Log ignoring time filter?

[ZacharyHart]

Not really sure how best to title this, sorry.

Using the Python API guide as a follow-along for 'managing your gis servers'

The query itself is working but seems to be ignoring the time filter:

comparing to the GUI in Sever Manager I'm not lining up these times with anything. I can supply any argument I want for start_time and no error is returned:

If I leave out the 'start_time' parameter entirely, the query returns exactly what I'm seeing in the Server Manager GUI exactly.

I'm I using start_time wrong? (Or is my understanding of it incorrect?)