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- From: hporopudas@tnclus.tele.nokia.fi
- Subject: Calendar (NEW,modified)
- Message-ID: <1992Aug29.115810.1@tnclus.tele.nokia.fi>
- Lines: 307
- Sender: usenet@noknic.nokia.fi (USENET at noknic)
- Nntp-Posting-Host: tne02.tele.nokia.fi
- Organization: Nokia Telecommunications.
- Date: Sat, 29 Aug 1992 09:58:09 GMT
-
-
- Hi !
-
-
- I little modified the Easter Rule.
-
- Hannu.
-
-
- Below this modified calendar:
-
-
- -----------------------------------------------------------------------------
-
- CALENDAR
-
- Hannu K. J. Poropudas
- (R&D Engineer, Nokia Telecommunications)
- (E-Mail Address: hporopudas@tnclus.tele.nokia.fi)
- Vesaisentie 9E, 90900 Kiiminki, Finland
-
-
- ABSTRACT
-
- This calendar is improved version of the Gregorian calendar. It has
- different leap-year correction rules than usual Gregorian calendar and it
- also extends much longer future time area, because it takes into account
- shortening of tropical year and lengthening of mean solar day, by changing
- leap-year rules after time periods of approximately 8000 years.
- The lunar calendar is used in the definition of Easter Sunday. Connection
- between the solar calendar and the lunar calendar is also given here.
-
-
-
- NEW CALENDAR
-
-
- 1 year = 12 months = 365 days.
-
- 1 week = 7 days.
- 1 day = 24 hours.
- 1 hour = 60 minutes.
- 1 minute = 60 seconds.
-
- Days (if possible Christian names could also be used instead of these):
-
- 1. Sunday,
- 2. Monday,
- 3. Thuesday,
- 4. Wednesday,
- 5. Thursday,
- 6. Friday,
- 7. Saturday.
-
- Months (if possible Christian names could also be used instead of these):
-
- 1. January 31 days,
- 2. February 28 days,
- 3. March 31 days,
- 4. April 30 days,
- 5. May 31 days,
- 6. June 30 days,
- 7. July 31 days,
- 8. August 31 days,
- 9. September 30 days,
- 10. October 31 days,
- 11. November 30 days,
- 12. December 31 days.
-
-
- Easter rule:
-
- Easter Sunday is approximately the first sunday after first full moon
- followed from the vernal equinox. Correct place for this calendar's vernal
- equinox is always the point, in northern hemisphere of Earth, when day's
- length increases to equal length as night's length. By this way the vernal
- equinox is always well defined.
-
-
- Connection between the solar calendar and the lunar calendar:
-
- Year's first month in the lunar calendar, starts during that new moon
- which is nearest to the vernal equinox. This first month starts 1-2 days
- after new moon, when Moon's narrow sickle starts to be seen.
-
- (if possible Christian names for lunar calendar's months could also be used).
-
-
- Leap-year correction rules until year 7500:
-
-
- 1. To every year divisible by four, except years which are multiples of
- hundred, one solar day is added to the end of February.
-
- 2. To every year, which is multiple of five hundred, one solar day is added
- to the end of February.
-
-
- Calendar maker's rule and all near future leap-year correction rules
- (not unified form):
-
-
- Shorthening of tropical year and lengthening of mean solar day must be
- accounted in calendar with new leap-year corrections after certain period
- of time.
- Calendar which takes into account of shortening of tropical year and
- lengthening of mean solar day must keep so. called "calendar maker's rule",
- which gives the number of mean solar days per tropical year at certain
- point T of time:
- -5
- 365,2422 - 1,25 * 10 T
-
- , where T is time in uniform centuries (Juliaanic centuries).
- Formula's safe area of use is about 10000 years at present accuracy of
- astronomical measurements.
- Measured tropical year at a certain point T of time is (Allen 1973):
- -6
- 365,24219878 - 6,16 * 10 T
-
- , where T is uniform centuries (Juliaanic centuries).
- Measured number of mean solar days at certain point T of time is
- (Allen 1973):
- 15 1 -8
- 1 + ----- * ----- * T = 1 + 1,7361 * 10 T
- 10000 86400
- , where T is uniform centuries (Juliaanic centuries).
- Lengthening of day is so small that it corresponds one second per 67000 years.
- Combining these both effects we have the number of mean solar days per
- tropical year:
- -6
- 365,24219878 - 6,16 * 10 T
- ----------------------------
- -8
- 1 + 1,7361 * 10 T
-
- , which is approximately, if only first order term is accounted:
- -5
- 365,2422 - 1,25 * 10 T .
-
- (From ancient fossil data we can also be confirmed that mean solar days per
- tropical year is decreasing quantity).
-
- The value 365,0000 is acieved possibly not until approximately in 2 million
- years. This is the point where there are no leap-year corrections and
- calendar's all definitions are still valid.
- If the last two digits are allowed to change, then the period, in which the
- last digit changes, is 800 years. The period, in which the last but one digit
- changes, is 8000 years (and so on). The period of 8000 years seems to be best
- choice for the first approximation:
-
- days/year Approximation N = 100* T Leap-year rules
- days/year (future time (not unified form)
- = 1900 + N) for 8000 years periods
- (n=integer)
- ------------------------------------------------------------------------
- 365,2422 365,242 0 n*4, +1 day
- 365,2421 800 n*100, -1 day
- 365,2420 1600 n*500, +1 day
- 365,2419 2400
- 365,2418 3200
- 365,2417 4000
- 365,2416 4800
- 365,2415 5600
- ------------------------------------------------------------------------
- 365,2414 365,241 6400 n*4, +1 day
- 365,2413 7200 n*100, -1 day
- 365,2412 8000 n*1000, +1 day
- 365,2411 8800
- 365,2410 9600
- 365,2409 10400
- 365,2408
- 365,2407
- 365,2406
- 365,2405
- ------------------------------------------------------------------------
- 365,2404 365,240 n*4, +1 day
- 365,2403 n*100, -1 day
- 365,2402
- 365,2401
- 365,2400
- 365,2399
- 365,2398
- 365,2397
- 365,2396
- 365,2395
- ------------------------------------------------------------------------
- 365,2394 365,239 n*4, +1 day
- 365,2393 n*100, -1 day
- 365,2392 n*1000, -1 day
- 365,2391
- 365,2390
- 365,2389
- 365,2388
- 365,2387
- 365,2386
- 365,2385
- ------------------------------------------------------------------------
- 365,2384 365,238 n*4, +1 day
- 365,2383 n*100, -1 day
- 365,2382 n*500, -1 day
- 365,2381
- 365,2380
- 365,2379
- 365,2378
- 365,2377
- 365,2376
- 365,2375
- ------------------------------------------------------------------------
- 365,2374 365,237 n*4, +1 day
- 365,2373 n*80, -1 day
- 365,2372 n*2000, -1 day
- 365,2371
- 365,2370
- 365,2369
- 365,2368
- 365,2367
- 365,2366
- 365,2365
- ------------------------------------------------------------------------
- 365,2364 365,236 n*4, +1 day
- 365,2363 n*60, -1 day
- 365,2362 n*380, +1 day
- 365,2361
- 365,2360
- 365,2359
- 365,2358
- 365,2357
- 365,2356
- 365,2355
- ------------------------------------------------------------------------
- 365,2354 365,235 n*4, +1 day
- 365,2353 n*60, -1 day
- 365,2352 n*600, +1 day
- 365,2351
- 365,2350
- 365,2349
- 365,2348
- 365,2347
- 365,2346
- 365,2345
- ------------------------------------------------------------------------
- 365,2344 365,234 n*4, +1 day
- 365,2343 n*60, -1 day
- 365,2342 n*1500, +1 day
- 365,2341
- 365,2340
- 365,2339
- 365,2338
- 365,2337
- 365,2336
- 365,2335
- ------------------------------------------------------------------------
- 365,2334 365,233 n*4, +1 day
- 365,2333 n*60, -1 day
- 365,2332 n*3000, -1 day
- 365,2331
- 365,2330
- 365,2329
- 365,2328
- 365,2327
- 365,2326
- 365,2325
- ------------------------------------------------------------------------
- 365,2324 365,232 n*4, +1 day
- 365,2323 n*60, -1 day
- 365,2322 n*750, -1 day
- 365,2321
- 365,2320
- 365,2319
- 365,2318
- 365,2317
- 365,2316
- 365,2315
- ------------------------------------------------------------------------
- 365,2314 365,231 n*4, +1 day
- 365,2313 n*50, -1 day
- 365,2312 n*1000, +1 day
- 365,2311
- 365,2310
- 365,2309
- 365,2308
- 365,2307
- 365,2306
- 365,2305
- ------------------------------------------------------------------------
- 365,2304 365,230 n*4, +1 day
- 365,2303 n*50, -1 day
- 365,2302
- 365,2301
- 365,2300
- 365,2299
- 365,2298
- 365,2297
- 365,2296
- 365,2295
- ------------------------------------------------------------------------
-
- ... ... ... and so on
-
-
-
- REFERENCES CITED
-
- 1. Allen, C. W., 1973.
- Astrophysical Quantities.
- 3. ed. Athlone Press, University of London, London, 1973.
-
-