Web alarm clock for 7:41 a.m.
Halfway through spreading rice to dry, you may need 7:41 am to pull you away from the work before another task absorbs your attention. Set the alarm now so you have a clear stopping point for checking the layer, clearing nearby clutter, or moving on with the morning. That leaves a useful stretch before 8:00 am without making the round hour your only cue.
Because the rice must be tended before the midday rain, check whether your phone is likely to sleep before the alarm time arrives. This browser alarm cannot interrupt a closed page or wake a sleeping phone, so the rice could remain outside longer than planned. Keep the page open and the phone awake, raise the volume enough to hear it from the drying area, and use a regular phone alarm as backup if you expect to step away.
While you are laying out the rice in the early morning, notice which parts of the drying area are still shaded at 7:41 am. Choose the brighter patch first, then move any basin, sack, or screen that will cast a longer shadow as the sun shifts. Positioning these beforehand means the layer can receive steadier light while you finish spreading it.