Originally Posted by
WineCountryUA
Those going Sunday will, at a minimum, miss part of the Monday workday and have an even more challenging time-zone shift, so do that but many people the local nights sleep that Saturday departure allows in SFO-FRA. Saturday departure for SFO-FRA/MUC was always my choice with driven by work requirements.
Sunday is also a popular day for going to Europe; if your office or client site is served nonstop from the US then you can usually arrive in the morning and make a slightly later (10am or so) morning meeting, and then have more than half the weekend at home. It was an easy choice for me when aligning with colleagues flying in first thing Monday morning from nearby in Europe.