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How To Read Volvelle Calendar?

Volvelle Inovasi as a new eclipse astronomical instrument properly gets a big attention especially for astronomy lover. Yes, maybe because this function is unique, great, and the first time in that country. When we trace the online library, we will lose many of old scientific instruments.

Cara baca kalender di Volvelle Inovasi Basic
How to read Volvelle Inovasi Calendar? 

Volvelle Inovasi developed in Semarang, Indonesia 2019. And now, its number became six eclipse development instruments. This instrument specially functioned for eclipse calculation with an easy way, quick, and enjoyable. This is becoming a strength of Volvelle.

On eclipse calculation, Volvelle just need two operations that many people can do it easily. The author concerned volvelle agar all of the user can predict the eclipses quick, easy, and enjoy. Either children or adult can do it.

In this session, we need to know that Volvelle have six components, which one by one is connected with other. So, we can’t use volvelle if we don’t have full components of it. One of these components is the calendar discs that have great character.

CALENDAR DISC

Volvelle Inovasi starts its calendar by 1 January and ends up on 31 December and there is 1 day located after 31 December. This concept used if there is a leap year like 2000, 2004, 2020, 2024 etc. as we know that each leap year, February consists of 29 days but in common year February just have 28 days. The common year will occur every three year subsequent and will end up by a leap year.

Volvelle use the first common year position for its calendar. So, we will see 28 February not 29. This consequence must add 1 day in a leap year. And volvelle place it on 32 Decembe. So, when there is a leap year, we can’t mean after 28 February is with 1 Marc but this is 29 February. Simply, the day after 28 February must be subtracted by 1 day.

For example. 3 March (2 March using), 4 July (3 July), 32 December (the meaning is 31 December).

ABOUT THE LINE ON CALENDAR DISC

We will see two lines with one is in red color and other is black color. Each black line represents one day. And volvelle just put five of kelipatan and place it on line. So, we just see the day like 5, 10, 15 etc. this decision is to efficiency of design. The red line is a symbol of minutes. And volvelle just input five lines which each one line represents 10 minutes.

NOW IS THE MAIN POINT. HOW WE READ THE POSITION OF THE DAY?


As a simple way that everyday has one black line and five red lines. You must read this position in the right sides of the number. For example. We see this position, so the meaning of 5 January is a number and five red lines on the right side. After number 5, enter to 6 January. The conclusion is the position of the day is in the right side. Line with a number of day is the end up of the day and enter the new day.

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