NavList:

Hello!

I'm looking at this table trying to invent a rule to remember on which day an equinox and a solstice would happen.

So far I could suspect that:

• vernal equinox is always on March 20
• summer solstice is on June 20 if it is a leap year, otherwise it is on June 21
• autumn equinox is on September 22 if it is a leap year or a year right after the leap one, otherwise it is on September 23
• winter solstice is on December 21 unless it is a third year in the leap years sequence, when it is on December 22

Is my speculation correct?

I need this to re-create the date scale (of a quadrant) properly for an arbitrary year number.

Regards,

Tony