I had begun in September getting ready to re-seed. I aerate with a had tool as the yard is too small , too hilly, and too broken up to support a garden tractor. That takes about 3 weekend days.
Then comes the reseeding. I cut the grass short, disturb the soil with a hard rake, put down starter fertilizer (20-27-5), put down seed, and walk on it to get it into the soil. I have been watering it twice a day to keep it moist. And for the first time in years, it has not dried out. However, it has not yet sprouted after 6 days. Maybe it is too cool and it will take longer. Or sometimes, real rain produces results. I have had that happen several times, after watering with treated water for days, a light rain will produce sprouting the very next day. This is the part of yardwork that I do not like, the waiting.