Docs Now Indicator
You can display a marker that represents the exact current time in both TimeGrid view and Timeline view.
nowIndicator
Whether or not to display a marker indicating the current time.
now
Explicitly sets the "today" date of the calendar. This is the day that is normally highlighted in yellow.
Now-Indicator Header Render Hooks
Customize the now-indicator "arrow" element that appears in the time axis of TimeGrid view and Timeline view.
Now-Indicator Line Render Hooks
Customize the now-indicator "line" element that appears over the day columns of TimeGrid view and Timeline view.
Now-Indicator Dot Render Hooks
Customize the now-indicator "dot" element that appears alongside the now-indicator line in the time axis of TimeGrid view and Timeline view.