diff --git a/CHANGELOG.md b/CHANGELOG.md
index 11b597e2878b..257f05f8461a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -20,6 +20,7 @@ Compatibility:
 * Add support for `Integer#[Range]` and `Integer#[start, length]` (#2182, @gogainda).
 * Allow private calls with `self` as an explicit receiver (#2196, @wildmaples).
 * Fixed `:perm` parameter for `File.write`.
+* Implemented `Time#floor` and `#ceil` (#2201, @wildmaples).
 
 Performance:
 
diff --git a/spec/tags/core/time/ceil_tags.txt b/spec/tags/core/time/ceil_tags.txt
deleted file mode 100644
index dd5276a2473b..000000000000
--- a/spec/tags/core/time/ceil_tags.txt
+++ /dev/null
@@ -1,7 +0,0 @@
-fails:Time#ceil defaults to ceiling to 0 places
-fails:Time#ceil ceils to 0 decimal places with an explicit argument
-fails:Time#ceil ceils to 2 decimal places with an explicit argument
-fails:Time#ceil ceils to 4 decimal places with an explicit argument
-fails:Time#ceil ceils to 7 decimal places with an explicit argument
-fails:Time#ceil returns an instance of Time, even if #ceil is called on a subclass
-fails:Time#ceil copies own timezone to the returning value
diff --git a/spec/tags/core/time/floor_tags.txt b/spec/tags/core/time/floor_tags.txt
deleted file mode 100644
index ebe945111e12..000000000000
--- a/spec/tags/core/time/floor_tags.txt
+++ /dev/null
@@ -1,5 +0,0 @@
-fails:Time#floor defaults to flooring to 0 places
-fails:Time#floor floors to 0 decimal places with an explicit argument
-fails:Time#floor floors to 7 decimal places with an explicit argument
-fails:Time#floor returns an instance of Time, even if #floor is called on a subclass
-fails:Time#floor copies own timezone to the returning value
diff --git a/src/main/ruby/truffleruby/core/time.rb b/src/main/ruby/truffleruby/core/time.rb
index 650436b97aa1..de6521ebc643 100644
--- a/src/main/ruby/truffleruby/core/time.rb
+++ b/src/main/ruby/truffleruby/core/time.rb
@@ -228,6 +228,24 @@ def round(places = 0)
     time + (rounded - original)
   end
 
+  def floor(places = 0)
+    original = to_i + subsec.to_r
+    floored = original.floor(places)
+
+    time = Time.allocate
+    time.send(:initialize_copy, self)
+    time + (floored - original)
+  end
+
+  def ceil(places = 0)
+    original = to_i + subsec.to_r
+    ceiled = original.ceil(places)
+
+    time = Time.allocate
+    time.send(:initialize_copy, self)
+    time + (ceiled - original)
+  end
+
   def self._load(data)
     # TODO: doesn't load ivars
     raise TypeError, 'marshaled time format differ' unless data.bytesize == 8