Hi, Granama. When I first took part in the Clueless and Peer Review competitions, they were generally set around mid-morning on the Tuesdays and Thursdays respectively. Some setters would occasionally, because of commitments or for their convenience, set the challenges earlier. Possibly this is becoming the "new normal". The competitions are global so, considering the variety of time zones involved, a variation in the times of setting is understandable. In other words, do whatever suits you best, Granama. Good luck for your first time at the helm!