One of the default demo template examples shows a bug…Or I am going crazy…
The code in the Demo
{% if is_state("sun.sun", "above_horizon") -%}
The sun rose {{ relative_time(states.sun.sun.last_changed) }} ago.
{%- else -%}
The sun will rise at {{ as_timestamp(strptime(state_attr("sun.sun", "next_rising"), "")) | timestamp_local }}.
{%- endif %}
I added the following to show clarity:
Sun rose at:
{{states.sun.sun.last_changed}}
Time now is:
{{ now() }}
This is what is displayed:
The sun rose 56 minutes ago.
Sun rose at:
2021-01-02 05:13:19.119782+00:00
Time now is:
2021-01-02 17:09:42.009895+11:00