Milliliters are a common unit of liquid measurement in medicine. Since a cc is virtually equivalent to an ml, what term is used doesn’t have much significance.
I use the metric system in my medical practice on a daily basis and don’t think twice about it. Then I go home and measure in feet and pounds, and if I get thirsty drink from a half-liter bottle of diet ginger ale.
No big deal. 
What you also should do for fluorescents and LEDs is look for a temperature number, which will be in degrees K. The numbers will usually be between 2500 K to 5500 K. You want lower numbers here, in the 2500-3600 range; they’ll be yellower rather than harsh blue. Generally much easier on the eyes, less inducive to headaches. The last LEDs I bought were 2700 K, very nice.
Now nothing on those bulbs will be at that temperature, so it’s not a real measure of anything. What the number reflects is what temperature black body the spectrum of the light emitted resembles. Although if you get a spectroscope and compare the spectrum with that of a black body of that temperature, they will look very different in detail. But the eye doesn’t do that, it just sees the combined light.
For reference, the Sun has a temperature of around 5800K and the filaments of incandescents are between about 2000 and 4000K depending on voltage.
What’s that in old money?
That was my post in the other thread, where it was meant as a tongue-in-cheek example of a temperature unit for the “digital” age. The use of bytes, of course, makes it a bit silly; the scientific version would be bits per joule.
Thought of as entropy divided by energy, one can see that the resulting unit actually measures “coldness”, that is, the inverse of temperature.
When we traveled in Italy 30 years ago, prices in produce markets were typically given per etto, which took me a minute to figure out was Italian for hectogram. That was a fairly convenient measure, as it amounts to around 1/4 pound, and that’s about what two of us would consume of any particular fruit or vegetable at a picnic meal (we were poor grad students, and only ate in restaurants occasionally on that trip). Not sure if that’s common anymore.
A long day? Both the English and SI Days are 86.4 kiloseconds IIRC. Did the IERRSS announce another of those 86.401 kilosecond Long Days, and I missed it?
Runners frequently do 5k’s or 10k’s, sometimes 8k’s (4.97 miles ≈ 5 miler)
When you couple it with a staff, it’s comforting.
Buy wooden boards in a Thai lumberyard and find they are rather ecumenical in their measurements. A plank’s thickness is given in inches, its width in centimeters and its length in sok (a traditional measure now standardized at 50 cm).
No cubits? 
I end up converting between millimeters and centimeters a lot, and sometimes between centimeters and meters. Grams and kilograms sometimes; liters and other volume units almost never.
If you’re asking what those numbers are in Fahrenheit, I don’t know. And I’m not going to convert them, because it doesn’t matter. No manufacturer marks their LEDs in Fahrenheit or even Celsius; if they have it at all, it’ll be in K’s. So all you have to know is to look for one between 2500 and 3600 K and it’s good. Unfortunately, not all LEDs and CFLs are marked thus. Last time I had to hunt around for one. If you can’t find any, perhaps they’ll just be labeled “soft white” or something similar.
A “long day” is 12% longer than a “short day”, so a “long day” is 26.88 hours. This is not to be confused with a “dayye” (sometimes called a “metric day”), which is ~10% longer than a “short day”, but longer than a “long day”.
Wait, maybe I’m confusing this with something else.
If the standardized sok is 50 cm, then I’m guessing that the traditional sok was in fact a cubit, the measurement from a man’s elbow to the tips of his fingers. That would have been just as natural and easy, as a body-scale unit, to the ancient Thais as to the ancient Egyptians.
Different cultures, however, vary in their standards for the ell, being from the tips of the fingers to either the near shoulder, the center of the chest, or the far shoulder.
And of course, the typical value of any of these body-measure units will vary from place to place because people vary from place to place.
I have a suspicion that people are naturally more comfortable with quantities in relatively tractable amounts, i.e. they’d rather say that they want 4 and a half ettos, than 450 grams. And fractions are perceived as undesirable, if unavoidable.
That’s why some die-hards will claim that the Imperial/US customary system is more “natural” than metric; the older style due to the ability and common usage of intermediate measurements, has a lot of units that fall in that tractable range. You might say that you got a pint of beer rather than 16 oz, or half a quart or possibly 2 cups. Similarly, you would say you put 31 gallons of gasoline in your pickup rather than half a hogshead or 124 quarts.
This sort of breaks on distance- we go straight from yards to miles, with the possible exception of “football fields”, which while standardized, aren’t a real unit of measurement. The furlong (220 yards / one-eighth mile) would serve that purpose, but it’s antiquated.
So these folks see the metric/SI versions and see that the intermediate measurements like hectogram and decigram and that they’re not commonly used, and assume that metric/SI are a pain in the ass, and therefore ‘unnatural’.
But we know that the ‘etto’ is really a hectogram, and that it does fulfill the tractability requirements. And that 5 deciliters/500ml is pretty close to a pint, and so on.
That’s what the metric deniers are missing; people still use the increments that are convenient; they just use the metric notation for them.
So often that I don’t even think of it as conversion. If I look up the specs for different products, and A weighs 1650 g and B weighs 1.80 kg, I don’t have to do any “conversion” to know that B is 150 grams heavier.
No, I was just meaning to express a general sense of mild bafflement. Perhaps you didn’t quite pick up from my original post that I already find buying lightbulbs unnecessarily complicated and stressful?
To give you an idea of where I’m coming from, for the first forty years of my life, the only thing I had to worry about when buying a lightbulb was whether I needed 40w, 60w or 100w.
Yes. And the traditional lineal measure for plots of land is the wah (now 2.0 meters) which, like the English fathom, is based on the tip-to-tip distance with hands outstretched. I don’t know how ancient the equation 1 wah = 4 sok is.
Yes, but I was giving you something real simple to look for. You don’t have to even know what the K stands for.
What’s a cubit?
Sorry for the Cosby quote, but even though he is a reprehensible human being he was also hilarious.
In the semiconductor industry I do lot of converting between millimeters and microns (micrometers). Less frequently (but not uncommon) microns and nanometers. For some reason the mil (0.001 inch) still pops up now and then, as does the Angstrom (1e-10 meter).