From this article, I think it’s important to remember that the author does both Western and Vedic astrology at this point in time, but when he made his prediction regarding Charles & Diana on the radio, he only did Western astrology at the time. He doesn’t talk about Charles’ chart in detail at all, so if you’re not familiar with it, then you might think that this 7-year-itch thing is the only possible technique to predict marriage dissolution. So let’s take a look at Charles’ chart then.

Charles has a Cancer ascendant, his ascendant lord (Moon) is in the 10th house. His 7th house (marriage/partnership) is ruled by Saturn. Saturn is placed in his 2nd house (Leo) in Magha nakshatra. Charles’ Venus is debilitated in Virgo, but it does receive some help with Mercury (Virgo’s ruler) since they are in a Parivartana yoga (mutual exchange).
Charles didn’t have the best chart for marriage before you get to planetary transits. His 7th house lord (Saturn) is placed in another maraka house (2nd house). 2nd house is also a financial house. Leo is ruled by the Sun. Sun and Saturn are in different planetary camps (in Vedic system). Sun belongs to the devas, and Saturn belongs to the asuras. All in all, it’s not a very favorable indication for marriage, and basically points to divorce, which we all know at this point happened.
When the author talks about Harry & Meghan’s dashas at the end of his article, I don’t think they’ll be married at that point, so it probably doesn’t matter. I think it’s more significant to consider Harry’s Jupiter-Saturn dasha, which goes from May 2027 to November 2029, and it’s relationship to William. The 11th house is the sign of the older brother; the 3rd house is the house of siblings in general. Saturn rules Harry’s 3rd house (Aquarius) where it is placed in his 11th house (Libra). Saturn is exalted in Libra, and it’s maximum exaltation is at 20 degrees. Harry’s Saturn is at 19 degrees and 12 minutes Libra, so it is at its maximum exaltation. I’m more willing to bet that William at this time is already Prince of Wales when Harry starts his Jupiter-Saturn dasha.
Then I think it’s necessary to take a look at both Charles & Williams charts & dasha sequences. In January of 2029, Saturn will be in Aries transiting Ashwini nakshatra, which is where Charles’ ascendant lord (Moon) is placed. Charles begins his Saturn-Saturn dasha on January 16, 2029, while Saturn is transiting his Moon, and I don’t think it’s a good sign. Because Charles’ Saturn is a maraka (death-inflicting planet) by its ownership of the 7th house, and it is placed in another maraka house (2nd), it probably has serious death-inflicting capabilities. Couple that with William beginning his Mercury-Mercury dasha on February 19, 2029. Mercury rules William’s 10th house (career). I think it’s likely that William will have a sudden change in his career in 2029.
To bring this back to Harry, Harry lost his mother (Diana) during his first Sade Sati (late 90s/early 2000s). Sade Sati is when Saturn transits the house 12th, 1st, and 2nd from the natal moon. I think it’s just likely that Harry will lose his father during his second Sade Sati, ten plus years from now.
I think the the tarot card “10″ probably refers to October. I think it’s possible/likely that the marriage between Harry & Megs is over in October–at least behind the scenes–but that getting to actually commit that end to paper will take a few more months. Perhaps the total number of months they’re married before the paperwork is finalized and accepted is 10 months.