diff --git a/README.md b/README.md
index 3036550..80bd8dc 100644
--- a/README.md
+++ b/README.md
@@ -124,6 +124,7 @@ Copy `config-sample.json` to `config.json` and then add your projects configurat
 | [`startDate`](#startDate)                                   | int     | Optional. Ignore all APC data before this date.                                              |
 | [`endDate`](#endDate)                                       | int     | Optional. Ignore all APC data after this date.                                               |
 | [`mergeDuplicateBoardAlights`](#mergeduplicateboardalights) | boolean | Whether or not to merge duplicate board-alight records by summing them. Defaults to `false`. |
+| [`ignoreMissingGTFSDates`](#ignoremissinggtfsdates)         | string  | Ignore errors caused by no service in GTFS.                                                            |
 | [`sqlitePath`](#sqlitepath)                                 | string  | A path to an SQLite database. Optional, defaults to using an in-memory database.             |
 | [`swiftlyAgencyKey`](#swiftlyagencykey)                     | string  | The Swiftly agency key to request data for.                                                  |
 | [`swiftlyAPIKey`](#swiftlyapikey)                           | string  | The API key for the Swiftly API.                                                             |
@@ -203,6 +204,14 @@ Copy `config-sample.json` to `config.json` and then add your projects configurat
     "mergeDuplicateBoardAlights": "false
 ```
 
+### ignoreMissingGTFSDates
+
+{Boolean} Whether or not to ignore errors caused by no service defined for a specific date in GTFS. Defaults to `false`.
+
+```
+    "ignoreMissingGTFSDates": "false
+```
+
 ### sqlitePath
 
 {String} A path to an SQLite database. Optional, defaults to using an in-memory database.
diff --git a/config-sample.json b/config-sample.json
index a1a4fb0..6c769e6 100644
--- a/config-sample.json
+++ b/config-sample.json
@@ -3,5 +3,6 @@
   "apcPath": "data/RVTD/boardings_alightings_rvtd_2017.csv",
   "mergeDuplicateBoardAlights": false,
   "startDate": 20170101,
-  "endDate": 20170301
+  "endDate": 20170301,
+  "ignoreMissingGTFSDates": false
 }
diff --git a/lib/import-apc.js b/lib/import-apc.js
index 4245f7d..9f83002 100644
--- a/lib/import-apc.js
+++ b/lib/import-apc.js
@@ -226,6 +226,9 @@ const convertToBoardAlights = (line, config) => {
       cleanLine(line, boardAlightModel, config),
     );
   } catch (error) {
+    if (config.ignoreMissingGTFSDates && error.cause === 'no-service-ids') {
+      return [];
+    }
     config.recordIssue(`${error.message} on line ${line.lineNumber}`);
     return [];
   }
diff --git a/lib/import-types/gmv.js b/lib/import-types/gmv.js
index 20185f8..4238a26 100644
--- a/lib/import-types/gmv.js
+++ b/lib/import-types/gmv.js
@@ -35,7 +35,8 @@ export const formatGMVLine = ({ record, lineNumber }) => {
 
   if (serviceIds.length === 0) {
     throw new Error(
-      `No service_ids found for calendar_date \`${record.ScheduledArrive}\``,
+      `No service_ids found for calendar_date \`${scheduledArrivalTime.toFormat('yyyyMMdd')}\``,
+      { cause: 'no-service-ids' },
     );
   }
 
diff --git a/lib/import-types/ltd.js b/lib/import-types/ltd.js
index fcc1a95..ed29213 100644
--- a/lib/import-types/ltd.js
+++ b/lib/import-types/ltd.js
@@ -26,7 +26,8 @@ export const formatLTDLine = ({ record, lineNumber }) => {
 
   if (serviceIds.length === 0) {
     throw new Error(
-      `No service_ids found for calendar_date \`${record.calendar_date}\``,
+      `No service_ids found for calendar_date \`${serviceDate}\``,
+      { cause: 'no-service-ids' },
     );
   }