1) a certain definite time or season fixed by natural law and returning with the revolving year

a) of the seasons of the year, spring, summer, autumn, winter

2) the daytime (bounded by the rising and setting of the sun), a day

3) a twelfth part of the day-time, an hour, (the twelve hours of the day are reckoned from the rising to the setting of the sun)

4) any definite time, point of time, moment