Unfortunately, there is no "side" to a glad corm - just a top and a bottom. Normally they'll bloom facing the sun, but there's probably enough reflected light from being 6" away from your white siding to have them bloom in that direction.

Bummer. My roses bloom toward the shrubs "behind" them rather than toward me. And my climbing fortuniana blooms for the neighbor's motor home.
Renee

It sounds like I'll have to move them. Now the question is where.

If they (the glads) are all lined up in a row, they aren't going to look great no matter in which direction they bloom.

Your best option would be in an area in full sun (sun up to sun down full). Plant deeper and closer together than is usually recommended on the boxes, etc. Plant them in clusters. Chances are then that many of them will probably bloom facing East, but you should get a mix of all directions.

Like I've said before, glads are gorgeous. But they're at their best in a vase where you can pull off the spent florets and cut down the stems to keep the bouquet looking fresh. Out in the yard, they don't look so hot once the spent florets start climbing up the stalk.