However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing, kidney problems (such as change in the amount of urine). This is not a complete list of possible side effects.
They are more active when it is cooler, but they can and do come out of hiding at any time of the day. Here in the desert, Arizona Rattlesnakes can easily overheat and die if they cannot find a cool place to keep themselves cool.
Cities in Arizona. Phoenix Time. Mountain Daylight TimeMDT. 12 Mar 2017Sunday 12 Mar 2017 at 3:00:00 am local time. 05 Nov 2017Sunday 05 Nov 2017 at 2:00:00 am local time, the time changes to 1:00:00 am. UTC-6:00DST started on 12 Mar 2017, clocks moved forward 1 hour; from 2:00:00 am to 3:00:00 am.