Top: lithium surface abundance evolution with time for the R1 models including different overshoot prescriptions (colour-coded). Individual points are data for solar twins (Carlos et al. 2019). Boxes are for Li observations of solar-type stars in different open clusters (Sestito & Randich 2005; Carlos et al. 2020 for M 67) with ages from Bossini et al. (2019). The numbers 1–10 identify the clusters: (1) NGC 2264, (2) IC 2391, IC 2602 and IC 4665, (3) α Per, Pleiades, Blanco I, (4) NGC 2516, (5) M 34, (6) NGC 6475, (7) M 35, (8) Praesepe, NGC 6633, (9) NGC 752, and (10) M 67. The colour of the boxes indicates the [Fe/H] value: Netopil et al. (2016): pink: −0.17 to −0.05; grey: −0.05 to 0.05; light blue: 0.05–0.16. Bottom: evolution of the angular velocity of the convective envelope and of the radiative core (in solar units Ω_⊙ = 2.86 × 10⁻⁶ s⁻¹; solid and dotted lines, respectively) vs age. The observational data is from Gallet & Bouvier (2015), except the four stars of M 67 from Barnes et al. (2016). Crosses are for individual stars; open diamonds show the 50th percentiles of the observed rotational distributions in each cluster.