Without time zones part of the answer is obvious indeed but the other, previously very easy (what phase of the sun is it: will you be tired or just waking up du

Without time zones part of the answer is obvious indeed but the other, previously very easy (what phase of the sun is it: will you be tired or just waking up during our meeting) completely absent. Timezone are super convenient and if you dislike it you can take the time at a previous colonizer of your choice, say england, and just use BST time with each other.