[Minecraft Tech] Compact 871 Million Year Redstone Clock + Tutorial

Working on a minecraft calendar i got a bit carried away...

To make this an 871 million year clock just fill all of one side of the hoppers with stackable items. I decided not to show it in the video because you would most likely get bored after the first decade, so i just put 1 item in each This clock system can easily be varied to make different clocks such as 1 min, 1 hour, 1 day and so on.

This is not my original design, i came up with a more compact one but it's only tileable to 2 clocks, giving a 9 hour clock (can be seen in the video background). The original hopper clock is from Etho and the tileable design, is by munin295. So all credit to them.

My calculations may be wrong, feel free to work it out yourself
0.4(64x5x2)^6 / 3.15569x10^7

Audio swapped, because Youtube...