Transit Moon Conjunct Natal Ketu
Moon takes about 29-30 days to traverse all the zodiacs or complete one cycle. Any aspect with transit moon can last about 3 to 4 hours depends on the speed of moon, if we take 1 degree offset from the exact aspect. If we take 1.5 degree offset, then the effects will be there for about 4.5 hours to 6 hours. The maximum of any aspect can last about only 6 hours.
Ketu represents rebirth / moksha, spirituality, charity, maternal grandfather, etc. When transit moon conjunct natal Ketu, it is a good time for doing charity events. You may spend your time and money towards charity service. It is also an excellent time to visit temples, do meditation, prayers and yoga.
Transit of moon is given paramount importance since it represents the mind. All slow moving planets such as Jupiter, Saturn can exhibit energies through faster moving planet moon only.