The two periods of the year (vernal equinox about March 21st and autumnal equinox about September 22nd) when the time from the rising of the sun to its setting is equal to the time from its setting to its rising. See Dig. 43, 13,1, 8.
The two periods of the year (vernal equinox about March 21st and autumnal equinox about September 22nd) when the time from the rising of the sun to its setting is equal to the time from its setting to its rising. See Dig. 43, 13,1, 8.