Hi Nickylou,
the 2 day Pamukkale-Efes trip last year went on a Thursday and a Sunday and I would imagine they will be same this year, however this
excursion has not started yet for this season so we have not been given the confirmed days yet. The 2 day trip is definitely the best way to do both excursions as it reduces the time spent travelling giving more time at each place. If you require more information on this or any of the other excursions just let me know.