Like earlier pointed out, 'great star', 'burn', and 'seven' relate to Sirius.  Now we can associate the "great star" with  the Place Charles de Gaulle (Arc de Triomphe + the surrounding circular "square") since it was originally called the Place d'Etoile or 'Square of the Star', further linking the two quatrains II-41 and II-48.

From a slightly different angle, the fragments of Comet SL-9 'burned' Jupiter for about '7 days' in July 1994 and caught the attention of the world.  The dates of this 'light show' were July 16~22 which roughly coincides with one of the key 'Sirius dates', July 20, mentioned earlier.  Moreover, the dates July 16~22 very closely matches the dates of the historic Apollo 11 mission - first ever manned landing on the Moon - which were July 16~24 (and the landing occurred on the key date, July 20).  This is meaningful especially when you consider the fact that Apollo the sun god could be identified with Horus the sun god (the son of Isis, and earlier associated with Sirius and Mars).  Recall also that July 20 was associated with the 'flood' (of the Nile) in conjunction with Sirius.  In Greco-Roman mythology, the god who causes the Flood to punish mankind is Jupiter - the very planet Comet SL-9 crashed into.  And Jupiter was mythologically associated with the 'eagle' - the very name of the spacecraft that landed on the moon on that exact flood/Sirius date, July 20 (1969)!

     
[Chile flag left, Texas flag right]

San Francisco:

1) Nearest town to Chile mine (Copiapo) was originally called San Francisco de la Selva de Copiapo.

2) SF flag features rising phoenix echoing Chile's 'Phoenix' capsule that brought miners out of 'Underworld':

10-hour clock

In the opening sequence with the clocks, just when the on-screen credit caption Christopher Lloyd is depicted, at the end of the name there is a 10-hour clock in the background. It reappears in full view when the credit caption "The Power of Love" - Performed by Huey Lewis and The News is displayed. This timing was officially used in France from 1794 for a little more than six months. This specific clock has a truly unique feature, it operates counterclockwise. The internet is not able to guide to any other such apparatus.

However, the clock shows the wrong time. 7:53 a.m. standard time is 3:28:48 French decimal time, based on the 10-hours-a-day clock; the decimal clock shows 7:85 decimal time (the hour hand is a few minutes fast), which is 18:50:24 or 6:50:24 p.m. standard time.