Because SDSU is on a semester system and UC San Diego is on a quarter system, there may be confusion about term beginning and ending dates. Do not assume that when classes are out at one university they are out at the other. During Winter break, for example, the times off are quite different for the two schools. Neither SDSU nor UC San Diego tolerate unexcused absences from graduate classes. It is important to be aware of the schedules of each university.
Time off from research placement and practicum placement should be arranged with the respective supervisor(s).