Glarb. Fixed:

```javascript
      // Wed Jul 17 2013 19:07:18 GMT-0400 (EDT)
      this.startDate = new Date(1374102438043);
      this.startDate.setHours(19, 7, 18);
      while (this.startDate.getDay() !== 3) {
        this.startDate.setHours(this.startDate.getHours() + 24);
      } 
```

Will always be 6:07:18PM on a Wednesday in any timezone.