About sending the notification in different times on the same day

Hi team,

am pretty new to knime. I would like to know how we send the data in different times of the day using knime.

For example, I want to send data at 9AM today which collects data from yesterday 4:01pm till today 8:59AM and one at 12PM today which collects data from 9:01AM till 11:59AM current day and another one at 4PM which collects data from 12:00PM till 15:59PM same day dynamically.

Any guidance will be really helpful.

Thank you