Formatting attributes?

[proffalken]

Hey folks,

I'm hoping I can somehow format the attribute of one of my sensors into something like 3 hours from now or 5pm tonight

My config is as follows:

type: custom:banner-card
heading:
  - mdi:home
  - Home
entities:
  - entity: device_tracker.me
    name: Me
  - entity: device_tracker.my_wife
    name: My Wife
  - entity: device_tracker.kid_no_1
    name: Kid No. 1
  - entity: device_tracker.kid_no_2
    name: Kid No. 2
    value: School
  - type: custom:simple-weather-card
    entity: weather.home_2
  - entity: binary_sensor.octopus_energy_saving_session
    attribute: next_joined_event_start
    name: Next Energy Saving Session
    size: 4
row_size: 4

Any ideas what I can use here?