[moron4hire]

Your only failure is because it's just wrong. It's about the same as trying to change "if((a + b) > c)" to "if(a > (c + b))". If this weren't time zones, it'd obviously be "if(a > (c - b))", because you have to balance the equation by applying the same operation to boths sides. But because this is dealing with timezones, the offset of "b" is different depending on the value of "a", so we won't know what to subtract from "c" to get the right comparison. So the right transformation for this "gotcha" is not even possible.

[paulclinger]

I think the advice will still work, but you'd need to switch from "named" timezones to number-specific one, so for example replace `PST` with `-08:00` and then apply the opposite conversion on the right side (as you and I suggested).