If you want a strict interpretation or suggestion you could follow the BBCH phenological developmental scale of crops. For Solanaceous fruits (tomatoes, aubergines, paprika/chilies) the main steps are the following:
1. Germination, 2. Leaf development,
3. Formation of side shoots, 4. Inflorescence emergence,
5. Flowering, 6. Development of fruit,
7. Ripening of fruit and seed, and finally 8. Senescence.