2 · Nature
23 · time
23N · the twelve months of the year represented by concepts other than personifications, human activities, landscapes, or still lifes of flowers and/or fruits
23N2 · months of the second quarter of the year ~ other concepts
23N21 · April ~ other concepts
23N21(+3) · April ~ other concepts (+ with signs or personifications of the planets together with zodiacal signs)
23N21(+32) · April ~ other concepts (+ with planets and zodiacal signs of the spring season)