Sun is dignified by domicile in Leo and is conjunct the midheaven. It’s just separated (within a degree) from Mars and is making an applying sextile to the benefic Jupiter. The Moon is waxing and it’s next applying aspect is a conjunction to Jupiter. For London the date is 28 July 2017 and time is 1307 (1:07PM). It’s the hour of the Sun – in London it literally starts just as the Sun culminates so your drawing/inscribing/etc will have to start then and completed within about 10 minutes, although you can continue any consecrations for the rest of the Sun hour. You can see the chart for this election below.