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Knowledge Base

Synodic Cycles


Synodic Cycles is similar to the Cycles tool , however instead of counting bars between two points, the change in aspect between two planets is measured, and repeated.

To add the tool to your chart, select the tool from the Astro tool group, and left-click on the first bar you want to calculate the tool from. Next, left-click on the bar where you want to calculate the tool to. Optuma will then draw the tool using the default settings.

Actions & Properties


Remove from Cycle: When the Synodic cycle is setup with multiple cycles in the order, this action allows you to remove one of those cycles from the sequence.

Add to Toolbar: Adds the selected tool to your custom toolbar.

Apply Settings to All: When multiple Synodic Cycles tools have been applied to a chart, page or workbook, this action can be used to apply the settings of the one selected to other instances of the tool. This is a great time saver if an adjustment is made to the tool - such as line colour - as this allows all the other Synodic Cycles tools in the chart, page or entire workbook to be updated instantly.

Copy Tool: Allows you to copy the selected tool, which can then be pasted onto a different chart window.

Move to Back: If the tool is displaying in front of other tools or indicators clicking this action will move the tool view to the background.

Move to Front: If the tool is displaying behind other tools or indicators on the chart, clicking this action will bring the tool to the forefront.

Set Time Alert: Selecting this action will set a Time Alert at the value the Vertical Line is positioned.

Restore Default Settings: Click this action if you have adjusted the default settings of the tool, and wish to return to the standard properties originally installed with Optuma.

Save Settings as Default: If you have adjusted any of the tool’s properties (colour, for example) you can save the adjustments as your new default setting. Each time you apply a new Synodic Cycles to a chart, the tool will display using the new settings.

Delete: Deletes the tool from the chart.


Tool Name: Allows you to adjust the name of the tool, as it's displayed in the Structures Panel.

Planet 1: Choose the first planet to be used in the calculation.

Planet 2: Choose the second planet to be used in the calculation.

Geo / Helio / Sidereal: Allows you to choose the Synodic Cycles setting between geocentric, heliocentric, and sidereal.

GMT Offset: Use this option to adjust the Synodic Cycles time zone setting for a specific market. Select the required GMT setting and the ephemeris will automatically update.

Show Vertical Lines: When deselected the vertical lines will not be displayed.

Line Over All Views: When selected the Synodic lines will extend across the complete chart and any view tools, e.g volume.

Project Cycles: This property controls which direction the cycle lines will be displayed, either Forward, Reverse or Both..

Cycles to Project: Set to show All cycles to be repeated or a Fixed Number of repeats.

Number of Cycles: When Fixed Number is selected above, this options allows you to specify the number of cycles to repeat.

Show Labels: When selected the date and cycle size (in degrees) will be added for each Synodic line.

Font Size: Allows you to adjust the size of the text displayed in the label. Moving the slider bar to the right increases the font size.

Lock to Round Numbers: As it is possible to vary the cycle length by simply dragging one of the cycle lines, the result can be a cycle size that includes a decimal value, e.g. 24.18 degrees. When the Lock to Round Numbers option is selected this will ensure that the Cycle Size is displayed in whole numbers only.

Lock Cycles: If you have other tools on your chart that you wish to move or adjust then there is a chance that you may inadvertently adjust the Cycle size. Selecting Lock Cycles will prevent any accidental cycle size adjustment when you are working with other tools on your chart.

Cycle Size (Degrees): This value represents the number of degrees per cycle.

Base Line Style: This option expands to set width, colour, transparency, etc of the line.

Interval Line Style: This option expands to display the same properties as the Base Line Style less the Transparency property.

Tool Transparency: Use this slider bar to adjust the transparency of the tool. Moving the slider to the left will increase the transparency of the tool.

Visible: Un-tick this checkbox to hide the tool from the chart.

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