I'm trying to better understand the trading hours of the
E-mini 500 S&P, which according to the CME Groups web pages are shown like this:
This is, however, rather incomprehensible for anyone non-expert.
There (and elsewhere) they say there is a
"Daily Maintenance" hour between
4pm - 5pm (Mon-Thu).
Q: What does that mean, and what going on at that time (what significance does it have)?