Assuming I have hours per day set at 8 and start time set at 9.00 am how can I narrow down tickets using a JQL filter for tickets created between 9.00 am and 10.00 am? I was thinking something like:
AND updated > startOfDay() AND updated < startOfDay("+1h")
Please see my answer here: Filter issues updated by particular user in period of time using JQL
It seems like you are asking the same question. Hopefully this helps you out.