How long does 0.5mg clonzapeam stay in yours system? took it yesterday at 2pm. normally take only 0.25mg once a day. should i skip today's 0.25 dose?

Clonazepam: Clonazepam's elimination half-life can be from 19 hours to 60 hours. So, you're likely to still have some on board from the previous day. I notice you're also complaining of "fatigue, depression, and weakness." these can be caused by clonazepam. I suggest contacting the doctor who prescribed this med, about these responses. S/he may want to change the directions on your prescription.