This is a form of pre-reflection in which you make your predictions explicit.
It involves articulating your expectations for an event that is yet to happen. You can then compare this to your actual experience of the event once it has happened. This can help to counteract hindsight bias.
This could include your expectations about:
what you will notice about the setting and context
how the event will play out (blow-by-blow)
the likely motivations and behaviours of participants
the range of likely (and unlikely) outcomes
the likely emotional reactions (yours and other people's)
Use journaling techniques to write an anticipatory account of the event.
Treat it as an imaginary memory of a real event and apply some of the other reflective tools and techniques to unpacking what assumptions lie behind your expectations, such as VITAE, ladder of inference, pre-mortems and decision trees.
Use archetypes, counterfactual thinking, cause-and-effect mapping and scenario planning to construct alternative versions of the expectation chronicle.