After reading Marcel's excellent site, I have learned to distinguish a few terms: sunlight, daylight, and skylight. Sunlight is direct sun, and it runs near 5500. Skylight is light that comes from the sky, and has no direct sun, i.e. in the shade facing north. Daylight is a combination of sunlight and skylight. Skylight is the bluest, and closer to 6500. Daylight is in between. D-65 is a spectral distribution curve constructed from averaging many types of light, and thus may not have any real analog. But if we are looking for something nearer to D-65, we might use skylight, rather than sunlight or daylight.
Here in Maine, we have had close to 2 weeks of solid rain, with another week predicted. As a result, I have not had a chance to test this out just yet.