index=iis | bucket _time span=1d | timechart span=1d count dc(cs_username)
The above works and the correct time is passed to the summary index.
I can query on _time and the time range picker workls, there is no date field but there is date_zone,date_year, date_zone, date_wday, date_second, date_month, date_minuet, date_mday, date_hour.
The below query still will not work but at least I've got something. I'll try to adjust it so its by cs_username.
index=iis | bucket _time span=30m | stats count dc(cs_username) by cs_username
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