Day or Night Tells the Whole Story *
Is it day or night? Many of us will look out of a window or take a glance at our watch to answer this question correctly. We think it's a simple question, but chances are we might not get the 'right' answer no matter what we say. Why not? Well the truth is that it is day, night, both day and night, neither day nor night (becoming one or the other), all of these, or none of these (impossible to say), depending on where we are and how we wish to look at it. Most of us will choose one of these answers without thinking but not all of them. Almost all of us will choose to answer based on what we see and not on what we'd like to see.
One View - Many Views
When we look out of a window (we have chosen a 'frame'), or when we choose an answer, we take one point of view that ignores and then creates or asks for all of the other points of view. For example, if it is 9 a.m. in the morning and we answer this question by saying it is day, we are right yet we are also wrong. In that very moment someone else might say that it is night in another part of the world (and they would be correct), or they might say that it is becoming night or becoming day, or both day and night, or neither day nor night, or all of these. No matter what they say, whether it is the same or different from what we say, they will be correct. Their being correct, however, will not make us incorrect.
True And-Or False
The question about day and night is a very important one to ponder. It teaches us something crucial about observation--that is, an observation is always totally arbitrary (limited by the frame the observer chooses). When we think about day and night, and how we normally think of day and night, we can see that we make observation errors all the time (49-51%). This is true even when, or, perhaps, especially when, we are very sure we're not making a mistake at all. The fact that it is day, night, neither, both, all of these, and/or none of these in the very same moment teaches us that every observation is both true and false, or that any observation is potentially true (always depending on the observer's frame). It also teaches us that every person who disagrees with us is as 'right' as we are, no matter how 'right' we think we are, and vice versa, vice versa, vice versa. So why do we argue with each other or waste any time at all focusing on non-productive sides of any situation? 
Whatever We Believe Is True is True
Well, one thing to pay close attention to is we can believe whatever we want to believe and eventually our belief will materialize for us. This holds true for any and all views, from any side of any observation, as day and night clearly show. People with opposing views are always both correct, eventually, and this is convenient and productive (and often troublesome) for all of us. It means that we can think our way into any situation, provided we stay firm in our thinking. For example, if we say that it is day when it is night, as long as we stay firm in our thinking that it is day, even if it is night, it will become day for us eventually, and therefore, for us, it can always be 'day'. (No way we can say what it will become for any other person, though.) Our observations alone determine how we experience things.
Day and Night Teach Us The Reality of Time
Because day and night occur continually, and in the same moment, everything is available to us in one present day (or moment). Thinking in the future or past keeps us from achieving goals, because all goals are accessible to us in the present . Seeing day through night may seem obvious, absurd or unimportant-- but seeing that it is day even when it's night guarantees we can think productively in all situations and circumstances. We can always get to 'day' by observing we are (already) there. The day-night observation is symbolic of, and present within, all entities (scientific, psychological, intuitional). The day-night symbol, above, (universal mandala) articulates and describes reality (every entity, animate, inanimate, large, small, slow, fast, real, ideal, abstract, concrete, hidden, showing). We can use the universal mandala to correct our 'partial,' incomplete, and always, from at least three perspectives, flawed, point of view. We can use the universal mandala to correct our misunderstanding of time. Okay. So, now that we know how to think productively, is it day or night? *(If you thoroughly understand this example, you understand everything there is to understand about everything, because this example is a general view of how all things are related.) One fact describes every universe: the opposite is also true. This fact describes, and is, a circle.
Conservation of the Circle is the basis for reality.
How to think in a circle...