Support Edm.Date type
Azure Search only supports Edm.DateTimeOffset. This is great for timestamps and other point-in-time data. However, it's horrible for things like birthdays, invoice dates, and other whole-date scenarios.
1976-08-27 is very different than 1976-08-27T00:00:00Z.
Edm.Date was added to OData v4 for this exact reason. It should be a primitive type in Azure Search as well.
Thank you for your feedback. We’re considering this for a future release of Azure Search.
Azure Search Product Team