diff --git a/app/resources/api/rest/customer/v1/cdr_resource.rb b/app/resources/api/rest/customer/v1/cdr_resource.rb
index d51e89367..5375159ae 100644
--- a/app/resources/api/rest/customer/v1/cdr_resource.rb
+++ b/app/resources/api/rest/customer/v1/cdr_resource.rb
@@ -43,7 +43,7 @@ def self.default_sort
   has_one :account, class_name: 'Account', relation_name: :customer_acc, foreign_key_on: :related
 
   ransack_filter :uuid, type: :uuid
-  ransack_filter :time_start, type: :datetime
+  ransack_filter :time_start, type: :datetime, default: { gteq: :apply_default_filter_time_start_gteq }
   ransack_filter :time_connect, type: :datetime
   ransack_filter :time_end, type: :datetime
   ransack_filter :duration, type: :number
@@ -105,4 +105,11 @@ def self.apply_allowed_accounts(records, options)
     scope = scope.where_customer_account(context[:allowed_account_ids]) if context[:allowed_account_ids].present?
     scope
   end
+
+  def self.apply_default_filter_time_start_gteq(options)
+    return nil if options.dig(:params, :filter, :time_start_gt).present?
+    return nil if options.dig(:params, :filter, :time_start_eq).present?
+
+    24.hours.ago.strftime('%F %T')
+  end
 end
diff --git a/app/resources/base_resource.rb b/app/resources/base_resource.rb
index 58cb3cfab..43963ad11 100644
--- a/app/resources/base_resource.rb
+++ b/app/resources/base_resource.rb
@@ -50,15 +50,22 @@ def self.type(custom_type)
   #   @see RansackFilterBuilder::RANSACK_TYPE_SUFIXES_DIC
   # @param column [Symbol]
   # @param verify [Proc, nil] custom validate/change values (receives [Array<String>] values)
-  def self.ransack_filter(attr, type:, column: nil, verify: nil, collection: nil)
+  def self.ransack_filter(attr, type:, column: nil, verify: nil, collection: nil, default: nil)
     raise ArgumentError, "type #{type} is not supported" unless RansackFilterBuilder.type_supported?(type)
     raise ArgumentError, ":collection option for type #{type} is not supported" if collection && type != :enum
 
-    RansackFilterBuilder.suffixes_for_type(type).each do |suf|
+    suffixes = RansackFilterBuilder.suffixes_for_type(type)
+    if default
+      wrong_suffixes = default.keys - suffixes.map(&:to_sym)
+      raise ArgumentError, "ransack_filter :#{attr} has wrong default suffixes: #{wrong_suffixes.join(', ')}" if wrong_suffixes.any?
+    end
+    suffixes.each do |suf|
       builder = RansackFilterBuilder.new(attr: attr, operator: suf, column: column, verify: verify, collection: collection)
       filter builder.filter_name,
              verify: ->(values, _ctx) { builder.verify(values) },
-             apply: ->(records, values, _opts) { builder.apply(records, values) }
+             apply: ->(records, values, _opts) { builder.apply(records, values) },
+             # see JsonapiRequestParserPatch#set_default_filters
+             default: default&.fetch(suf.to_sym, nil)
     end
   end
 
diff --git a/config/initializers/jsonapi_resources.rb b/config/initializers/jsonapi_resources.rb
index 3f9f76990..ad957dcb5 100644
--- a/config/initializers/jsonapi_resources.rb
+++ b/config/initializers/jsonapi_resources.rb
@@ -4,6 +4,7 @@
 require 'jsonapi/exceptions/authentication_failed'
 require 'jsonapi/operation_dispatcher_patch'
 require 'jsonapi/relationship_patch'
+require 'jsonapi/request_parser_patch'
 
 JSONAPI.configure do |config|
   # can be paged, offset, none (default)
diff --git a/lib/jsonapi/request_parser_patch.rb b/lib/jsonapi/request_parser_patch.rb
new file mode 100644
index 000000000..729fd5a8b
--- /dev/null
+++ b/lib/jsonapi/request_parser_patch.rb
@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+module JsonapiRequestParserPatch
+  def set_default_filters
+    @resource_klass._allowed_filters.each do |filter, opts|
+      next if opts[:default].nil? || !@filters[filter].nil?
+
+      if opts[:default].is_a?(Proc)
+        value = opts[:default].call({ params:, context: })
+      elsif opts[:default].is_a?(Symbol)
+        value = @resource_klass.public_send(opts[:default], { params:, context: })
+      else
+        value = opts[:default]
+      end
+
+      @filters[filter] = value unless value.nil?
+    end
+  end
+end
+
+JSONAPI::RequestParser.prepend(JsonapiRequestParserPatch)
diff --git a/spec/controllers/api/rest/admin/accounts_controller_spec.rb b/spec/controllers/api/rest/admin/accounts_controller_spec.rb
index 9e25e338f..11e158353 100755
--- a/spec/controllers/api/rest/admin/accounts_controller_spec.rb
+++ b/spec/controllers/api/rest/admin/accounts_controller_spec.rb
@@ -24,6 +24,7 @@
       get :index, params: json_api_request_query
     end
     before { create_list :account, 2 }
+    let(:json_api_request_query) { nil }
 
     it_behaves_like :jsonapi_filter_by_name do
       let(:subject_record) { create(:account) }
@@ -36,6 +37,7 @@
     end
     let(:factory) { :account }
     let(:trait) { :with_max_balance }
+    let(:json_api_request_query) { nil }
 
     it_behaves_like :jsonapi_filters_by_string_field, :name
     it_behaves_like :jsonapi_filters_by_number_field, :balance
diff --git a/spec/controllers/api/rest/admin/cdr/auth_logs_controller_spec.rb b/spec/controllers/api/rest/admin/cdr/auth_logs_controller_spec.rb
index 5e372788b..2b273d151 100644
--- a/spec/controllers/api/rest/admin/cdr/auth_logs_controller_spec.rb
+++ b/spec/controllers/api/rest/admin/cdr/auth_logs_controller_spec.rb
@@ -93,6 +93,7 @@
     end
     let(:factory) { :auth_log }
     let(:trait) { :with_id }
+    let(:json_api_request_query) { nil }
 
     it_behaves_like :jsonapi_filters_by_datetime_field, :request_time
     it_behaves_like :jsonapi_filters_by_boolean_field, :success, type: :boolean
diff --git a/spec/controllers/api/rest/admin/cdr/cdrs_controller_spec.rb b/spec/controllers/api/rest/admin/cdr/cdrs_controller_spec.rb
index 99c5347de..f5e65fd3b 100644
--- a/spec/controllers/api/rest/admin/cdr/cdrs_controller_spec.rb
+++ b/spec/controllers/api/rest/admin/cdr/cdrs_controller_spec.rb
@@ -443,6 +443,7 @@
     end
     let(:factory) { :cdr }
     let(:trait) { :with_id_and_uuid }
+    let(:json_api_request_query) { nil }
 
     it_behaves_like :jsonapi_filters_by_datetime_field, :time_start
     it_behaves_like :jsonapi_filters_by_number_field, :destination_next_rate
diff --git a/spec/controllers/api/rest/admin/codec_groups_controller_spec.rb b/spec/controllers/api/rest/admin/codec_groups_controller_spec.rb
index 7c35c7dba..f0fa451ea 100644
--- a/spec/controllers/api/rest/admin/codec_groups_controller_spec.rb
+++ b/spec/controllers/api/rest/admin/codec_groups_controller_spec.rb
@@ -15,6 +15,7 @@
       get :index, params: json_api_request_query
     end
     let(:factory) { :codec_group }
+    let(:json_api_request_query) { nil }
 
     it_behaves_like :jsonapi_filters_by_string_field, :name
   end
diff --git a/spec/controllers/api/rest/admin/contacts_controller_spec.rb b/spec/controllers/api/rest/admin/contacts_controller_spec.rb
index 54785b309..01bf14c92 100644
--- a/spec/controllers/api/rest/admin/contacts_controller_spec.rb
+++ b/spec/controllers/api/rest/admin/contacts_controller_spec.rb
@@ -15,6 +15,7 @@
       get :index, params: json_api_request_query
     end
     let(:factory) { :contact }
+    let(:json_api_request_query) { nil }
 
     it_behaves_like :jsonapi_filters_by_string_field, :email
     it_behaves_like :jsonapi_filters_by_string_field, :notes
diff --git a/spec/controllers/api/rest/admin/contractors_controller_spec.rb b/spec/controllers/api/rest/admin/contractors_controller_spec.rb
index 56311a94e..c30f1fdd9 100755
--- a/spec/controllers/api/rest/admin/contractors_controller_spec.rb
+++ b/spec/controllers/api/rest/admin/contractors_controller_spec.rb
@@ -24,6 +24,7 @@
       get :index, params: json_api_request_query
     end
     before { create_list :contractor, 2, vendor: true }
+    let(:json_api_request_query) { nil }
 
     it_behaves_like :jsonapi_filter_by_name do
       let(:subject_record) { create(:contractor, vendor: true) }
@@ -35,6 +36,7 @@
       get :index, params: json_api_request_query
     end
     let(:factory) { :vendor }
+    let(:json_api_request_query) { nil }
 
     it_behaves_like :jsonapi_filters_by_string_field, :name
     it_behaves_like :jsonapi_filters_by_boolean_field, :enabled
diff --git a/spec/controllers/api/rest/admin/dialpeers_controller_spec.rb b/spec/controllers/api/rest/admin/dialpeers_controller_spec.rb
index f66f6df51..9a4f1c907 100755
--- a/spec/controllers/api/rest/admin/dialpeers_controller_spec.rb
+++ b/spec/controllers/api/rest/admin/dialpeers_controller_spec.rb
@@ -19,6 +19,7 @@
       get :index, params: json_api_request_query
     end
     before { create_list :dialpeer, 2 }
+    let(:json_api_request_query) { nil }
 
     it_behaves_like :jsonapi_filter_by_external_id do
       let(:subject_record) { create :dialpeer }
@@ -46,6 +47,7 @@
       get :index, params: json_api_request_query
     end
     let(:factory) { :dialpeer }
+    let(:json_api_request_query) { nil }
 
     it_behaves_like :jsonapi_filters_by_boolean_field, :enabled
     it_behaves_like :jsonapi_filters_by_number_field, :next_rate
diff --git a/spec/controllers/api/rest/admin/gateway_groups_controller_spec.rb b/spec/controllers/api/rest/admin/gateway_groups_controller_spec.rb
index e40b30433..d2843d3e4 100755
--- a/spec/controllers/api/rest/admin/gateway_groups_controller_spec.rb
+++ b/spec/controllers/api/rest/admin/gateway_groups_controller_spec.rb
@@ -26,6 +26,7 @@
       get :index, params: json_api_request_query
     end
     let(:factory) { :gateway_group }
+    let(:json_api_request_query) { nil }
 
     it_behaves_like :jsonapi_filters_by_string_field, :name
   end
@@ -53,6 +54,7 @@
       get :index, params: json_api_request_query
     end
     before { create_list :gateway_group, 2 }
+    let(:json_api_request_query) { nil }
 
     it_behaves_like :jsonapi_filter_by_name do
       let(:subject_record) { create :gateway_group }
diff --git a/spec/controllers/api/rest/admin/gateways_controller_spec.rb b/spec/controllers/api/rest/admin/gateways_controller_spec.rb
index 84e921f13..1443f6aff 100644
--- a/spec/controllers/api/rest/admin/gateways_controller_spec.rb
+++ b/spec/controllers/api/rest/admin/gateways_controller_spec.rb
@@ -9,6 +9,7 @@
     end
     let(:factory) { :gateway }
     let(:trait) { :with_incoming_auth }
+    let(:json_api_request_query) { nil }
 
     it_behaves_like :jsonapi_filters_by_string_field, :host
     it_behaves_like :jsonapi_filters_by_number_field, :port
diff --git a/spec/controllers/api/rest/admin/payments_controller_spec.rb b/spec/controllers/api/rest/admin/payments_controller_spec.rb
index 7c2239060..abc6f58a2 100755
--- a/spec/controllers/api/rest/admin/payments_controller_spec.rb
+++ b/spec/controllers/api/rest/admin/payments_controller_spec.rb
@@ -26,6 +26,7 @@
       get :index, params: json_api_request_query
     end
     let(:factory) { :payment }
+    let(:json_api_request_query) { nil }
 
     it_behaves_like :jsonapi_filters_by_number_field, :amount
     it_behaves_like :jsonapi_filters_by_string_field, :notes
diff --git a/spec/controllers/api/rest/admin/routing/area_prefixes_controller.rb b/spec/controllers/api/rest/admin/routing/area_prefixes_controller.rb
index 314972b71..479a49d3a 100644
--- a/spec/controllers/api/rest/admin/routing/area_prefixes_controller.rb
+++ b/spec/controllers/api/rest/admin/routing/area_prefixes_controller.rb
@@ -20,6 +20,7 @@
       get :index, params: json_api_request_query
     end
     let(:factory) { :area_prefix }
+    let(:json_api_request_query) { nil }
 
     it_behaves_like :jsonapi_filters_by_string_field, :prefix
   end
diff --git a/spec/controllers/api/rest/admin/routing/areas_controller_spec.rb b/spec/controllers/api/rest/admin/routing/areas_controller_spec.rb
index 87fac46bf..87242969e 100644
--- a/spec/controllers/api/rest/admin/routing/areas_controller_spec.rb
+++ b/spec/controllers/api/rest/admin/routing/areas_controller_spec.rb
@@ -20,6 +20,7 @@
       get :index, params: json_api_request_query
     end
     let(:factory) { :area }
+    let(:json_api_request_query) { nil }
 
     it_behaves_like :jsonapi_filters_by_string_field, :name
   end
diff --git a/spec/controllers/api/rest/admin/routing/destination_next_rates_spec.rb b/spec/controllers/api/rest/admin/routing/destination_next_rates_spec.rb
index 4701d55a5..21de42598 100644
--- a/spec/controllers/api/rest/admin/routing/destination_next_rates_spec.rb
+++ b/spec/controllers/api/rest/admin/routing/destination_next_rates_spec.rb
@@ -9,6 +9,7 @@
     end
 
     let(:factory) { :destination_next_rate }
+    let(:json_api_request_query) { nil }
 
     it_behaves_like :jsonapi_filters_by_number_field, :initial_rate
     it_behaves_like :jsonapi_filters_by_number_field, :next_rate
diff --git a/spec/controllers/api/rest/admin/routing/destinations_controller_spec.rb b/spec/controllers/api/rest/admin/routing/destinations_controller_spec.rb
index e5dd9a5c7..3b5079880 100755
--- a/spec/controllers/api/rest/admin/routing/destinations_controller_spec.rb
+++ b/spec/controllers/api/rest/admin/routing/destinations_controller_spec.rb
@@ -105,6 +105,7 @@
       get :index, params: json_api_request_query
     end
     before { create_list :destination, 2 }
+    let(:json_api_request_query) { nil }
 
     it_behaves_like :jsonapi_filter_by_external_id do
       let(:subject_record) { create(:destination) }
@@ -152,6 +153,7 @@
       get :index, params: json_api_request_query
     end
     let(:factory) { :destination }
+    let(:json_api_request_query) { nil }
 
     it_behaves_like :jsonapi_filters_by_boolean_field, :enabled
     it_behaves_like :jsonapi_filters_by_string_field, :prefix
diff --git a/spec/controllers/api/rest/admin/routing/dialpeer_next_rates_controller_spec.rb b/spec/controllers/api/rest/admin/routing/dialpeer_next_rates_controller_spec.rb
index 94a36a67b..79671f9c1 100644
--- a/spec/controllers/api/rest/admin/routing/dialpeer_next_rates_controller_spec.rb
+++ b/spec/controllers/api/rest/admin/routing/dialpeer_next_rates_controller_spec.rb
@@ -24,6 +24,7 @@
       get :index, params: json_api_request_query
     end
     let(:factory) { :dialpeer_next_rate }
+    let(:json_api_request_query) { nil }
 
     it_behaves_like :jsonapi_filters_by_number_field, :next_rate
     it_behaves_like :jsonapi_filters_by_number_field, :initial_rate
diff --git a/spec/controllers/api/rest/admin/routing/numberlist_items_controller_spec.rb b/spec/controllers/api/rest/admin/routing/numberlist_items_controller_spec.rb
index c91cd3926..e2f8c94e6 100644
--- a/spec/controllers/api/rest/admin/routing/numberlist_items_controller_spec.rb
+++ b/spec/controllers/api/rest/admin/routing/numberlist_items_controller_spec.rb
@@ -21,6 +21,7 @@
       get :index, params: json_api_request_query
     end
     let(:factory) { :numberlist_item }
+    let(:json_api_request_query) { nil }
 
     it_behaves_like :jsonapi_filters_by_string_field, :key
     it_behaves_like :jsonapi_filters_by_number_field, :action_id
diff --git a/spec/controllers/api/rest/admin/routing/numberlists_controller_spec.rb b/spec/controllers/api/rest/admin/routing/numberlists_controller_spec.rb
index d84319173..b95912699 100644
--- a/spec/controllers/api/rest/admin/routing/numberlists_controller_spec.rb
+++ b/spec/controllers/api/rest/admin/routing/numberlists_controller_spec.rb
@@ -8,6 +8,7 @@
       get :index, params: json_api_request_query
     end
     let(:factory) { :numberlist }
+    let(:json_api_request_query) { nil }
 
     it_behaves_like :jsonapi_filters_by_string_field, :name
     it_behaves_like :jsonapi_filters_by_number_field, :default_action_id
diff --git a/spec/controllers/api/rest/admin/routing/rateplans_controller_spec.rb b/spec/controllers/api/rest/admin/routing/rateplans_controller_spec.rb
index de7fb1b22..f10b07acd 100755
--- a/spec/controllers/api/rest/admin/routing/rateplans_controller_spec.rb
+++ b/spec/controllers/api/rest/admin/routing/rateplans_controller_spec.rb
@@ -24,6 +24,7 @@
       get :index, params: json_api_request_query
     end
     before { create_list :rateplan, 2 }
+    let(:json_api_request_query) { nil }
 
     it_behaves_like :jsonapi_filter_by_name do
       let(:subject_record) { create :rateplan }
@@ -35,6 +36,7 @@
       get :index, params: json_api_request_query
     end
     let(:factory) { :rateplan }
+    let(:json_api_request_query) { nil }
 
     it_behaves_like :jsonapi_filters_by_string_field, :name
   end
diff --git a/spec/controllers/api/rest/admin/routing/routing_groups_controller_spec.rb b/spec/controllers/api/rest/admin/routing/routing_groups_controller_spec.rb
index 44b78041f..b7ba91f18 100755
--- a/spec/controllers/api/rest/admin/routing/routing_groups_controller_spec.rb
+++ b/spec/controllers/api/rest/admin/routing/routing_groups_controller_spec.rb
@@ -24,6 +24,7 @@
       get :index, params: json_api_request_query
     end
     before { create_list(:routing_group, 2) }
+    let(:json_api_request_query) { nil }
 
     it_behaves_like :jsonapi_filter_by_name do
       let(:subject_record) { create(:routing_group) }
diff --git a/spec/controllers/api/rest/admin/routing/routing_tag_detection_rules_controller_spec.rb b/spec/controllers/api/rest/admin/routing/routing_tag_detection_rules_controller_spec.rb
index aa3ac78b0..5bc44bd00 100644
--- a/spec/controllers/api/rest/admin/routing/routing_tag_detection_rules_controller_spec.rb
+++ b/spec/controllers/api/rest/admin/routing/routing_tag_detection_rules_controller_spec.rb
@@ -31,6 +31,7 @@
       get :index, params: json_api_request_query
     end
     let(:factory) { :routing_tag_detection_rule }
+    let(:json_api_request_query) { nil }
 
     it_behaves_like :jsonapi_filters_by_string_field, :src_prefix
     it_behaves_like :jsonapi_filters_by_string_field, :dst_prefix
diff --git a/spec/controllers/api/rest/admin/routing_plans_controller_spec.rb b/spec/controllers/api/rest/admin/routing_plans_controller_spec.rb
index 14d4bd134..c732dc655 100755
--- a/spec/controllers/api/rest/admin/routing_plans_controller_spec.rb
+++ b/spec/controllers/api/rest/admin/routing_plans_controller_spec.rb
@@ -24,6 +24,7 @@
       get :index, params: json_api_request_query
     end
     before { create_list :routing_plan, 2 }
+    let(:json_api_request_query) { nil }
 
     it_behaves_like :jsonapi_filter_by_name do
       let(:subject_record) { create :routing_plan }
@@ -35,6 +36,7 @@
       get :index, params: json_api_request_query
     end
     let(:factory) { :routing_plan }
+    let(:json_api_request_query) { nil }
 
     it_behaves_like :jsonapi_filters_by_string_field, :name
     it_behaves_like :jsonapi_filters_by_number_field, :rate_delta_max
diff --git a/spec/requests/api/rest/customer/v1/cdrs_controller_spec.rb b/spec/requests/api/rest/customer/v1/cdrs_controller_spec.rb
index 74221fd7a..8eb072141 100644
--- a/spec/requests/api/rest/customer/v1/cdrs_controller_spec.rb
+++ b/spec/requests/api/rest/customer/v1/cdrs_controller_spec.rb
@@ -19,6 +19,91 @@
 
     it_behaves_like :json_api_customer_v1_check_authorization
 
+    context 'with default filters (time_start_gteq)' do
+      let!(:cdrs) do
+        [
+          create(:cdr, customer_acc: account),
+          create(:cdr, customer_acc: account, time_start: 23.hours.ago)
+        ]
+      end
+
+      before do
+        # ignored because default filter is time_start_gteq: 24.hours.ago
+        create(:cdr, customer_acc: account, time_start: 25.hours.ago)
+        create(:cdr, customer_acc: account, time_start: 35.hours.ago)
+
+        # ignored because base collection has only records with is_last_cdr=true
+        create(:cdr, customer_acc: account, is_last_cdr: false)
+      end
+
+      it 'returns records of this customer' do
+        subject
+        expect(response.status).to eq(200)
+        actual_ids = response_json[:data].pluck(:id)
+        expect(actual_ids).to match_array(cdrs.map(&:uuid))
+      end
+    end
+
+    context 'with time_start_gteq filter' do
+      let(:json_api_request_query) do
+        { filter: { time_start_gteq: 48.hours.ago.strftime('%F %T') } }
+      end
+      let!(:cdrs) do
+        [
+          create(:cdr, customer_acc: account),
+          create(:cdr, customer_acc: account, time_start: 23.hours.ago),
+          # included in collection because passed filter time_start_gteq overrides default filter time_start_gteq
+          create(:cdr, customer_acc: account, time_start: 47.hours.ago)
+        ]
+      end
+
+      before do
+        # ignored because passed filter is time_start_gteq: 48.hours.ago
+        create(:cdr, customer_acc: account, time_start: 49.hours.ago)
+        create(:cdr, customer_acc: account, time_start: 100.days.ago)
+
+        # ignored because base collection has only records with is_last_cdr=true
+        create(:cdr, customer_acc: account, is_last_cdr: false)
+      end
+
+      it 'returns records of this customer' do
+        subject
+        expect(response.status).to eq(200)
+        actual_ids = response_json[:data].pluck(:id)
+        expect(actual_ids).to match_array(cdrs.map(&:uuid))
+      end
+    end
+
+    context 'with time_start_gt filter' do
+      let(:json_api_request_query) do
+        { filter: { time_start_gt: 48.hours.ago.strftime('%F %T') } }
+      end
+      let!(:cdrs) do
+        [
+          create(:cdr, customer_acc: account),
+          create(:cdr, customer_acc: account, time_start: 23.hours.ago),
+          # included in collection because default filter time_start_gteq skipped when filter time_start_gt passed
+          create(:cdr, customer_acc: account, time_start: 47.hours.ago)
+        ]
+      end
+
+      before do
+        # ignored because passed filter is time_start_gteq: 48.hours.ago
+        create(:cdr, customer_acc: account, time_start: 49.hours.ago)
+        create(:cdr, customer_acc: account, time_start: 100.days.ago)
+
+        # ignored because base collection has only records with is_last_cdr=true
+        create(:cdr, customer_acc: account, is_last_cdr: false)
+      end
+
+      it 'returns records of this customer' do
+        subject
+        expect(response.status).to eq(200)
+        actual_ids = response_json[:data].pluck(:id)
+        expect(actual_ids).to match_array(cdrs.map(&:uuid))
+      end
+    end
+
     context 'account_ids is empty' do
       let(:cdrs) { Cdr::Cdr.where(customer_id: customer.id, is_last_cdr: true) }
       let(:records_qty) { 2 }
@@ -129,7 +214,12 @@
       let(:pk) { :uuid }
 
       it_behaves_like :jsonapi_filters_by_uuid_field, :uuid
-      it_behaves_like :jsonapi_filters_by_datetime_field, :time_start
+      it_behaves_like :jsonapi_filters_by_datetime_field, :time_start do
+        # overrides default filter to avoid conflicts with tests
+        let(:json_api_request_query) do
+          { filter: { time_start_gteq: 50.days.ago.strftime('%F %T') } }
+        end
+      end
       it_behaves_like :jsonapi_filters_by_datetime_field, :time_connect
       it_behaves_like :jsonapi_filters_by_datetime_field, :time_end
       it_behaves_like :jsonapi_filters_by_number_field, :duration
diff --git a/spec/support/contexts/ransack_filter_setup.rb b/spec/support/contexts/ransack_filter_setup.rb
index 948ee1abb..d0e081516 100644
--- a/spec/support/contexts/ransack_filter_setup.rb
+++ b/spec/support/contexts/ransack_filter_setup.rb
@@ -27,6 +27,7 @@ def primary_key_for(record)
     response_data.map { |r| r['id'] }
   end
   let(:json_api_request_query) do
-    { filter: { filter_key => filter_value } }
+    current = super() || {}
+    current.deep_merge(filter: { filter_key => filter_value })
   end
 end