Thanks for letting me know.
I will post the schematic in the appropriate thread later so that everyone can see it.
It's quite a useful circuit that allows a longer time delay for the same capacitor value.
The principle it works on is charging the capacitor to a higher voltage before the relay driver transistor will turn on. The zener diode used in my circuit is 5.6V or higher, but can't be lower than 5.1V because very low voltage zener diodes tend to have unpredictable characteristics at low current levels.