Minecraft wiki entry for Development_versions, associated text: Loot table predicates can now be defined in separate files and used for entity selectors and in execute if command.
Added new parameters to the location_check condition.
offsetX, offsetY, offsetZ – optional offsets to location.
Added reference.
Includes condition defined in predicates directory of datapack, selected with name parameter.
Added time_check condition.
Checks day time.
value – range of accepted values.
period – if present, time will be modulo-divided by this value (for example, if set to 24000, value will operate on a time period of days).