There is a great deal of discussion and some concern about slow appearance of SC24. This is not unusual, the past records show similar delayed occurrences, some much longer. There are even cycles with false starts. Also in the same category of events should be included cycles with double peaks of which there were 2-3 in the most recent past. This might appear odd that a delayed start, false start or double peak should be events with the same cause.
Numerical analysis for all of the 23 solar cycles appears to show presence of a short-term sub-cycle with period of about 400 days, easily observed during the more intense part of the normal cycle.
If a trough of sub-cycle coincides with start of a new cycle (as may be case at the present) then start could be suppressed up to 200 days, alternatively if a peak of sub-cycle coincides with 11 year minimum than a false start may appear (e.g. 1766, 1799, 1890, 1976). Double peak will occur if sub-cycle’s trough occurs at peak of the main cycle (e.g. SC22 and most notably SC23).
If this is of interest, you can find graphical representation for all 23 cycles on http://www.vukcevic.co.uk , select the link for SOLAR SUBCYCLE.
Please note that lover part of the scale is magnified by factor of 2 (two) for easer perception, ignore minus sign.