Google Calendar node get:event returns incorrect time for recurring event's nextOccurrence

[marcelreschke]

Bug Description

When using When retrieving recurring events from Google Calendar, the nextOccurrence field contains incorrect time values. While the date is calculated correctly, the time portion is being set to the current time of execution instead of maintaining the original event's scheduled time.

Current output example:

[
  {
    "kind": "calendar#event",
    // ... redacted ...
    "start": {
      "dateTime": "2023-09-07T09:30:00+02:00",
      "timeZone": "Europe/Berlin"
    },
    "end": {
      "dateTime": "2023-09-07T11:00:00+02:00",
      "timeZone": "Europe/Berlin"
    },
    // ... redacted ...
    "recurrence": [
      "RRULE:FREQ=WEEKLY;UNTIL=20300101T225959Z;BYDAY=TH"
    ],
    // ... redacted ...
    "nextOccurrence": {
      "start": {
        "dateTime": "2024-12-19T08:42:42+00:00",
        "timeZone": "Europe/Berlin"
      },
      "end": {
        "dateTime": "2024-12-19T10:12:42+00:00",
        "timeZone": "Europe/Berlin"
      }
    }
  }
]

To Reproduce

1. Add Google Calendar.
2. Connect via OAuth.
3. Choose Resource: Event, Operation: Get, Calendar ID: your-id, Event ID: your-recurring-event-id.
4. Test step.

Expected behavior

The nextOccurrence datetime should retain the original event's time part, adjusted to the next occurrence date.

Expected output example:

[
  {
    "kind": "calendar#event",
    // ... redacted ...
    "start": {
      "dateTime": "2023-09-07T09:30:00+02:00",
      "timeZone": "Europe/Berlin"
    },
    "end": {
      "dateTime": "2023-09-07T11:00:00+02:00",
      "timeZone": "Europe/Berlin"
    },
    // ... redacted ...
    "recurrence": [
      "RRULE:FREQ=WEEKLY;UNTIL=20300101T225959Z;BYDAY=TH"
    ],
    // ... redacted ...
    "nextOccurrence": {
      "start": {
        "dateTime": "2024-12-19T09:30:00+02:00",
        "timeZone": "Europe/Berlin"
      },
      "end": {
        "dateTime": "2024-12-19T11:00:00+02:00",
        "timeZone": "Europe/Berlin"
      }
    }
  }
]

Operating System

Alpine Linux 3.20.3

n8n Version

1.69.2

Node.js Version

v20.18.0

Database

SQLite (default)

Execution mode

main (default)

[Joffcom]

Hey @marcelreschke,

We have created an internal ticket to look into this which we will be tracking as "N8N-7981"