diff --git a/app/src/main/java/apps/amine/bou/readerforselfoss/HomeActivity.kt b/app/src/main/java/apps/amine/bou/readerforselfoss/HomeActivity.kt
index 8b86b79..f32b21e 100644
--- a/app/src/main/java/apps/amine/bou/readerforselfoss/HomeActivity.kt
+++ b/app/src/main/java/apps/amine/bou/readerforselfoss/HomeActivity.kt
@@ -104,11 +104,11 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
     private var itemsCaching: Boolean = false
     private var updateSources: Boolean = true
     private var hiddenTags: List<String> = emptyList()
+    private var apiVersionMajor: Int = 0
 
     private var periodicRefresh = false
     private var refreshMinutes: Long = 360L
     private var refreshWhenChargingOnly = false
-    private val dateTimeFormatter = "yyyy-MM-dd HH:mm:ss"
 
     private lateinit var tabNewBadge: TextBadgeItem
     private lateinit var tabArchiveBadge: TextBadgeItem
@@ -195,6 +195,8 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
 
         handleSharedPrefs()
 
+        getApiMajorVersion()
+
         getElementsAccordingToTab()
     }
 
@@ -330,6 +332,28 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
         }
     }
 
+    private fun getApiMajorVersion() {
+        api.apiVersion.enqueue(object : Callback<ApiVersion> {
+            override fun onFailure(call: Call<ApiVersion>, t: Throwable) {
+                if (apiVersionMajor >= 4) {
+                    Config.dateTimeFormatter = "yyyy-MM-dd'T'HH:mm:ssXXX"
+                }
+            }
+
+            override fun onResponse(call: Call<ApiVersion>, response: Response<ApiVersion>) {
+                if(response.body() != null) {
+                    val version = response.body() as ApiVersion
+                    apiVersionMajor = version.getApiMajorVersion()
+                    sharedPref.edit().putInt("apiVersionMajor", apiVersionMajor).commit()
+
+                    if (apiVersionMajor >= 4) {
+                        Config.dateTimeFormatter = "yyyy-MM-dd'T'HH:mm:ssXXX"
+                    }
+                }
+            }
+        })
+    }
+
     override fun onResume() {
         super.onResume()
 
@@ -442,6 +466,8 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
         if (refreshMinutes <= 15) {
             refreshMinutes = 15
         }
+
+        apiVersionMajor = sharedPref.getInt("apiVersionMajor", 0)
     }
 
     private fun handleThemeBinding() {
@@ -906,7 +932,7 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
 
                     thread {
                         val dbItems = db.itemsDao().items().map { it.toView() }.sortedByDescending {
-                            SimpleDateFormat(dateTimeFormatter).parse(it.datetime)
+                            SimpleDateFormat(Config.dateTimeFormatter).parse(it.datetime)
                         }
                         runOnUiThread {
                             if (dbItems.isNotEmpty()) {
@@ -1010,7 +1036,7 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
 
             thread {
                 val dbItems = db.itemsDao().items().map { it.toView() }.sortedByDescending {
-                    SimpleDateFormat(dateTimeFormatter).parse(it.datetime)
+                    SimpleDateFormat(Config.dateTimeFormatter).parse(it.datetime)
                 }
                 runOnUiThread {
                     if (dbItems.isNotEmpty()) {
diff --git a/app/src/main/java/apps/amine/bou/readerforselfoss/api/selfoss/SelfossApi.kt b/app/src/main/java/apps/amine/bou/readerforselfoss/api/selfoss/SelfossApi.kt
index 47197ab..038bc01 100644
--- a/app/src/main/java/apps/amine/bou/readerforselfoss/api/selfoss/SelfossApi.kt
+++ b/app/src/main/java/apps/amine/bou/readerforselfoss/api/selfoss/SelfossApi.kt
@@ -215,6 +215,9 @@ class SelfossApi(
     fun update(): Call<String> =
         service.update(userName, password)
 
+    val apiVersion: Call<ApiVersion>
+        get() = service.version()
+
     val sources: Call<List<Source>>
         get() = service.sources(userName, password)
 
diff --git a/app/src/main/java/apps/amine/bou/readerforselfoss/api/selfoss/SelfossModels.kt b/app/src/main/java/apps/amine/bou/readerforselfoss/api/selfoss/SelfossModels.kt
index 0d74c25..3bf313f 100644
--- a/app/src/main/java/apps/amine/bou/readerforselfoss/api/selfoss/SelfossModels.kt
+++ b/app/src/main/java/apps/amine/bou/readerforselfoss/api/selfoss/SelfossModels.kt
@@ -48,6 +48,19 @@ data class Spout(
     @SerializedName("description") val description: String
 )
 
+data class ApiVersion(
+        @SerializedName("version") val version: String?,
+        @SerializedName("apiversion") val apiversion: String?
+) {
+    fun getApiMajorVersion() : Int {
+        var versionNumber = 0
+        if (apiversion != null) {
+            versionNumber = apiversion.substringBefore(".").toInt()
+        }
+        return versionNumber
+    }
+}
+
 data class Source(
     @SerializedName("id") val id: String,
     @SerializedName("title") val title: String,
diff --git a/app/src/main/java/apps/amine/bou/readerforselfoss/api/selfoss/SelfossService.kt b/app/src/main/java/apps/amine/bou/readerforselfoss/api/selfoss/SelfossService.kt
index 553579d..371213b 100644
--- a/app/src/main/java/apps/amine/bou/readerforselfoss/api/selfoss/SelfossService.kt
+++ b/app/src/main/java/apps/amine/bou/readerforselfoss/api/selfoss/SelfossService.kt
@@ -103,6 +103,9 @@ internal interface SelfossService {
         @Query("password") password: String
     ): Call<List<Source>>
 
+    @GET("api/about")
+    fun version(): Call<ApiVersion>
+
     @DELETE("source/{id}")
     fun deleteSource(
         @Path("id") id: String,
diff --git a/app/src/main/java/apps/amine/bou/readerforselfoss/utils/Config.kt b/app/src/main/java/apps/amine/bou/readerforselfoss/utils/Config.kt
index 1f9f290..c0dca46 100644
--- a/app/src/main/java/apps/amine/bou/readerforselfoss/utils/Config.kt
+++ b/app/src/main/java/apps/amine/bou/readerforselfoss/utils/Config.kt
@@ -40,6 +40,8 @@ class Config(c: Context) {
 
         const val newItemsChannelId = "new-items-channel-id"
 
+        var dateTimeFormatter = "yyyy-MM-dd HH:mm:ss"
+
         fun logoutAndRedirect(
             c: Context,
             callingActivity: Activity,
diff --git a/app/src/main/java/apps/amine/bou/readerforselfoss/utils/ItemsUtils.kt b/app/src/main/java/apps/amine/bou/readerforselfoss/utils/ItemsUtils.kt
index 2f7c562..d0a49b7 100644
--- a/app/src/main/java/apps/amine/bou/readerforselfoss/utils/ItemsUtils.kt
+++ b/app/src/main/java/apps/amine/bou/readerforselfoss/utils/ItemsUtils.kt
@@ -22,7 +22,7 @@ fun String.toTextDrawableString(c: Context): String {
 fun Item.sourceAndDateText(): String {
     val formattedDate: String = try {
         " " + DateUtils.getRelativeTimeSpanString(
-            SimpleDateFormat("yyyy-MM-dd HH:mm:ss").parse(this.datetime).time,
+            SimpleDateFormat(Config.dateTimeFormatter).parse(this.datetime).time,
             Date().time,
             DateUtils.MINUTE_IN_MILLIS,
             DateUtils.FORMAT_ABBREV_RELATIVE