demo-facts-lifetime.yml

# ansible-playbook -i localhost, ./demo-facts-lifetime.yml
- hosts: localhost
  connection: local
  tasks:
      - name: Facts gathereed OK
        debug:
            var: ansible_date_time.epoch
      - name: Sleep for a few seconds
        command: sleep 2

- hosts: localhost
  connection: local
  tasks:
      - name: Facts from previous run OK
        debug:
            var: ansible_date_time.epoch
      - name: Sleep for 4s
        command: sleep 4

- hosts: localhost
  connection: local
  tasks:
      - name: Facts from previous run NOT OK
        debug:
            var: ansible_date_time.epoch