I think:
It's possible, if you go about it in the following unintuitive (and probably unintended) way:
1. Make the first timer switch off/on at the exact same time (0 time elapsed between being on/off), or disable the off state entirely
2. Make the second timer on for 2 hours: from 11 a.m. to 1 p.m., with a 24 hour cycle
Alternatively, do action 1 for timer 2, and action 2 for timer 1
Due to Weather Vane's answer, it's clear that the first timer will influence the second, by altering the set of times for which the second timer will be active. The only way to prevent this (subtle?) alteration from eventually throwing one of the timers off-kilter is by having one timer be always on (i.e., with 0 delay between off/on times). After doing this, the other timer behaves as if it were plugged into a regular outlet (because the electric flow never shuts off). Then
Then, how do we get an hour each in the mornings and evenings, with just 1 timer? Well, clearly, we have to use 2 adjacent hours, because we only have 1 effective timer at this point. So, we use 11 a.m. to 1 p.m. as the 2 adjacent hours, and that's that - every 24 hours, you will have exactly 1 hour of morning power, and 1 hour of afternoon power.