I have more anxiety in the evenings, but I put this down to having children and around dinner time is when my husband comes home, the kids are excited to see Dad, the kids are hungry and tired and their behaviour is often worse.
So, by the time dinner and baths are done, my anxiety levels are often sky high and I will be more snappy or likely to not cope with little things. I think my cup (PTSD Cup Theory) has well and truly runneth over!
So, once the boys are in bed and my husband has gone to bed - he goes early - I can start calming down.