start parameter has type=date
The date leads to
but this date can be one of the types date,dateTime,instant,Period,Timing.
The confusion is that date type can be date or dateTime. So date can be date or can be not date.
date as a datetype is defined here https://www.hl7.org/fhir/datatypes.html#date
A date, or partial date (e.g. just year or year + month) as used in human communication. The format is YYYY, YYYY-MM, or YYYY-MM-DD, e.g. 2018, 1973-06, or 1905-08-23. There SHALL be no time zone . Dates SHALL be valid dates
So, the question is when I do search for Slots can I use timezone or cannot? I noticed that HAPI allows putting there time zone while it seems that date type restricts the search by YYYY-MM-DD , i.e. no time and time zone.
What is canonical (normative) rule for search by Slot date? Can date/time be used or should stick to date only?