Mark 16:9 - Accounting for Jesus being the tomb for three days:

Acts 10:3 - Example of time accounting in the New Testament. Cornelius counts the time as four days, but we would probably call it three days since it was roughly 72 hours. Cornelius counted the partial first and fourth days as full days.

II Chronicles 10:5 - This is another example from the Old Testament.

Matthew 27:63-64 - Jesus’ enemies certainly understood Jesus about time.