Need to filter your odata query and only have the datetime value to work with?
if your format looks like: 2018-12-31T00:00:00
Then you can query it by wrapping it in a datetime tag with quotes. see example below with it combining with an ID filter to only show a person’s information greater than 1/1/2018
https://yourserver/yourservice/YourData?$filter=(%20ID%20eq%201234%20and%20EXP_DATE%20gt%20datetime%272018-01-01T00:00:00.000%27)
Note: you can also do other options like less than (lt) or others.
Onward!