Anyone looking for guidance ahead of Monday's solar eclipse is in luck: former astronaut Julie Payette has put together a manual, complete with photos, on what viewers can expect as the sky turns dark.
The eclipse is slated to begin at 2:15 p.m. and last for two hours and 20 minutes.
Payette explains a partial eclipse will unfold during the first hour, "with full daylight throughout."
Anyone watching from within the path of totality will then see the moon cover the sun at 3:27 p.m., "and suddenly day will become night."
Payette adds this period of darkness, or "totality," should last a few minutes before daylight returns.
The partial eclipse will then continue for another hour, ending at 4:35 p.m.
