1 INTRODUCTION  
2 DATA AND SAMPLE SELECTION  
2.1 The GOGREEN survey  
2.2 Spectroscopic sample  
2.3 Photometric coverage  
2.4 Sample selection  
3 FITTING STAR FORMATION HISTORIES OF QUIESCENT GALAXIES  
4 RESULTS  
4.1 The dependence of star formation histories on mass and environment  
4.2 The dependence of age on mass and environment  
4.3 Recent star formation  
5 DISCUSSION  
5.1 Mass-dependent evolution of quiescent galaxies  
5.2 Environment-dependent evolution of quiescent galaxies  
5.3 Toy models of cluster galaxy evolution  
6 CONCLUSIONS