The exact location of the moon in the sky depends to a very small extent on your location on the earth's surface. The tweet says near Brighton, and that's alrea

The exact location of the moon in the sky depends to a very small extent on your location on the earth's surface. The tweet says near Brighton, and that's already accurate enough to tell the direction of the moon much more accurately than the size of the moon in the sky. At the time of the video (3am UK time), the moon from brighton was at a compass heading of 144 degrees (calculated by Stellarium). The observer location of "near Brighton" is accurate to within a few km. The moon at that time had a diameter in the sky of 0.5225 degrees (it doesn't change much), so you can also get a reasonably accurate idea of the zoom level of the video, taking the size of the moon in pixels when it is most in-focus (and accounting a bit for glare).