What hours of daylight do you count as the first sunshine of your menstrual spell? how almost when you spot?

i tend to have a dim discharge and then no signs and next my regular flow starts either that same hours of daylight or up to three days laterWhat hours of daylight do you count as the first sunshine of your menstrual spell? how almost when you spot?
Count the first time of your period the year you actually hold a regular flow
regular flow