Add relatedDates to replace relatedDate

context.json

@@ -138,6 +138,7 @@
     "startDate": "http://schema.org/startDate",
     "endDate": "http://schema.org/endDate",
     "relatedDate": "http://www.w3.org/2000/01/rdf-schema#seeAlso",
+    "relatedDates": "http://www.w3.org/2000/01/rdf-schema#seeAlso",
     "location": {
       "@id": "http://www.opengis.net/ont/geosparql#asGeoJSON",
       "@type": "@json"

examples/example.item.json

@@ -1,5 +1,6 @@
 {
   "startDate": "Y-12424",
   "endDate": "2016/2023",
-  "relatedDate": "2012T12:07"
+  "relatedDate": "2012T12:07",
+  "relatedDates": ["2007-03-01T13:00:00Z","-2012"]
 }

jskos.md

@@ -368,7 +368,8 @@ changeNote    [language map] of [list]  see [SKOS Documentary Notes]
 note          [language map] of [list]  see [SKOS Documentary Notes]
 startDate     [date]                    date of begin (birth, creation...) of the item
 endDate       [date]                    date of end (death, resolution...) of the item
-relatedDate   [date]                    other date somehow related to the item
+relatedDate   [date]                    other date somehow related to the item (deprecated)
+relatedDates  array of [date]           other dates somehow related to the item
 startPlace    [set]                     where an item started (e.g. place of birth)
 endPlace      [set]                     where an item ended (e.g. place of death)
 place         [set]                     other relevant place(s) of the item
@@ -1177,6 +1178,7 @@ Public services to validate JSKOS data are included in instances of
 ### next
 
 - Add extended dates for `startDate`, `endDate`, and `relatedDate`.
+- Add `relatedDates` to replace `relatedDate`
 
 ### 0.5.4 (2024-09-27) {.unnumbered}
 

schemas/item.schema.json

@@ -162,9 +162,16 @@
       "$ref": "#/definitions/edtf"
     },
     "relatedDate": {
-      "description": "other date somehow related to the item",
+      "description": "other date somehow related to the item (deprecated, use relatedDates instead)",
       "$ref": "#/definitions/edtf"
     },
+    "relatedDates": {
+      "description": "other date somehow related to the item (deprecated, use relatedDates instead)",
+      "type": "array",
+      "items": {
+        "$ref": "#/definitions/edtf"
+      }
+    },
     "location": {
       "description": "geographic location of the item",
       "$ref": "#/definitions/location"