For London the date is 28 July 2017 and time is 1307 (1:07PM).
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. 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.
To make sure of the correct time you can draw up a chart for this time for your location at astro.com, or, if that's too hard, you can check when the Sun culminates by plugging in your city details at the USNO observatory site here http://aa.usno.navy.mil/data/docs/mrst.php and can check when Sun hour begins and ends at lunarium.co.uk (if you're really stuck, feel free to PM me).
The fourth table is of the Sun, and is made of a square of six, and contains thirty six numbers, whereof six in every side, and Diameter, produce 111, and the sum of all is 666. There are over it divine names with an Intelligency to what is good, with spirit to what is evil, and out of it is drawn Characters of the Sun, and the spirits thereof. This being engraven on a Golden plate with the Sun being fortunate, renders him that wears it to be renowned, amiable, acceptable, potent in all his works, and equals a man to Kings, and Princes, elevating him to high fortunes, inabling to do whatsoever he pleaseth
The Sun is generally good for wealth, friendship, success, health, promotions and freedom from melancholy.