Whether we think we are living in the past or in the future, we’ve always been squarely in the present moment. When we “stroll down memory lane” or “boldly go where no one has gone before”, we’re still exactly wherever we are, in the same time and place. Our memories of the past and plans for the future are nothing but present mental fabrications.
Wherever we are, that is “here”. Wherever we were before, that was “here” then. Wherever we go later, that will also be “here” then.
We can never return to yesterday, nor can we advance to tomorrow. Yesterday was now, only then. Tomorrow will be now, only then. It’s always now.
There are no geographical or temporal alternatives. It’s HOW we live “here and now” that matters: avoiding harm, doing good, purifying the mind.