You have to meditate daily in order to keep them opened. Is like body-building, once you stop trainings, the muscle mass is gradually decreasing and you have to restart the trainings in order to get back to that state. I never used Chronos so I can't give you a link really but you can also use the SS calendar which gives you real-time positions of the moon.
https://ancient-forums.com/viewtopic.php?f=3&t=26302&p=120575