Setting Clocks

I have a digital, do it all clock and in/out temp monitor, and don't have the instructions to set it, but usually can by trial and error. I tried and tried with the time change, and gave up. I marked on it, -5, +10. I subtract 5 hrs from the hrs, and add 10min to the min, and figure the time. That works for what time I wound up with trying to reset it.

Should calle it a Swiss Army Clock, like I call a phone I have that Does Everything, or just about. It is a phone that has Caller ID, is a speaker phone, has a clock and calender, adding machine function.

I was having a problem with my reg phone, that is connected to it, that the handset is easier to hold, that would dial whenever I picked up the handset, whether calling or recieving, and a voice would say, the call blocking feature was now disabled. Then I would have to wait to get a dial tone, and it was a pain...