In order to work with just the date, I'd suggest you start by creating a calculated field to truncate the time:
Timestamp as Date
// Truncate the time DATE([Timestamp])
If you workbook will not need the time part of the timestamp, you could also just change that field's data type to Date.
Then put this field on Rows.
Then right-click the pill and change to "Exact Date"
Then right-click and change to discrete.
Then drag Type to rows.
Then drag Number of Records to the Text card.
Count_v2018.3.twbx 13.5 KB
Thank you so much for the quick and helpful reply Zhouyi!
Thank you so much for the thorough and helpful reply Ken!