Note: due to the various micro-climates on our West Coast, these are approximate times to plant. Experiment to find what works for you.
Oats: as early as you can get onto the soil in the New Year, or "whenever the mud dries enough in the spring to be workable," as Gene Logsdon says. Possibly late February, depending on your micro-climate and soil.
Spring-planted rye: early March.
Quinoa: April. Don't try to overwinter quinoa, since it doesn't like being wet.
Spring Wheats: April.
Kamut (Polish wheat): April.
Winter Wheats: September/October.
Fall-planted Rye: October.