قالب:JULIANDAY/شرح

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This template computes the number of the التاريخ اليولياني starting at noon on the date given in parameter (in the تقويم ميلادي, without any Julian correction for التقويم الغريغوري ‏ where the calendar was not effectively applied).

The result is valid for all proleptic Gregorian calendar dates starting on March 1, 4801 BC at midnight.

Syntax:
{{JULIANDAY|year|[month]|[day]|[hour]|[minute]|[second]}}
  • The year (required) must be astronomical (year=1 in 1 AD (Anno Domini), year=0 in 1 BC, year=-1 in 2 BC).
  • The month (optional, default value 1) is expressed between 1 and 12 from January to December (but offsets are possible for computing other years).
  • The year and month are first converted into a number of months, then rounded to the nearest integer to compute the actual year and month used for computing dates.
  • The day (optional, default value 1) is normally between 1 and 31 (but offsets are possible for computing other months). Decimals are possible for fractions of day.
  • The hour (optional, default value 12) is normally between 0 and 23 (but offsets are possible for computing other days). Note that Julian days begin at noon (hour = 12) and thus hours 0-11 of a solar day are one Julian day earlier than hours 12-23. The value may extend outside of the normal range and is considered as additional number of julian days (a Julian day is 24 hours or 86400 seconds exactly, ignoring any adjustment of leap seconds within the UTC calendar). Decimals are possible for fractions of hour.
  • The minute and second (optional, default value 0) are normally between 0 and 59 (but offsets are possible for computing other hours). Decimals are possible for fractions of minute or second.
  • All parameters can be any valid numeric expression which is evaluated before computing.
Note:
The julian day, when computed modulo 7, grows from 0 (on Monday at noon) to 6 (on Sunday at noon)) and falls back to 0 (on next Monday). This corresponds to the order of days in the ISO week.
Examples:
  • {{JULIANDAY|-4800|2|29|23|59|59}} ينتج -32044.500011574 (proleptic) (in year 4801 BC), last Gregorian date where the result is false (the returned JD is too large by 365 days)
  • {{JULIANDAY|-4800|3|1|0|0|0}} ينتج -32410.5 (proleptic) (in year 4801 BC), first Gregorian date where the result is correct
  • {{JULIANDAY|-4800|3|1}} ينتج -32410 (proleptic) (in year 4801 BC), same date at noon
  • {{JULIANDAY|-4800|3|2}} ينتج -32409 (proleptic) (in year 4714 BC), tests the 1 day increment
  • {{JULIANDAY|-4713|11|24}} ينتج 0 (proleptic) (in year 4714 BC)
  • {{JULIANDAY|-4713|11|25}} ينتج 1 (proleptic) (in year 4714 BC)
  • {{JULIANDAY|0|1|1}} ينتج 1721060 (proleptic) (in year 1 BC)
  • {{JULIANDAY|0|12|25}} ينتج 1721419 (proleptic)
  • {{JULIANDAY|0|12|30}} ينتج 1721424 (proleptic) (Julian Anno Domini, first day in proleptic Julian year 1 AD, or December 30 in proleptic Gregorian year 1 BC)
  • {{JULIANDAY|0|12|31}} ينتج 1721425 (proleptic)
  • {{JULIANDAY|1|1|1}} ينتج 1721426 (proleptic) (Gregorian Anno Domini, in proleptic Gregorian year 1 AD, or January 3 in proleptic Julian year 1 AD)
  • {{JULIANDAY|200|2|28}} ينتج 1794167 (proleptic) (last day of Julian leap year 200 AD, not leap in the proleptic Gregorian calendar)
  • {{JULIANDAY|200|3|1}} ينتج 1794168 (proleptic) (first day where the Julian and proleptic Gregorian calendars are equivalent)
  • {{JULIANDAY|300|2|28}} ينتج 1830691 (proleptic) (last day where the Julian and proleptic Gregorian calendars are equivalent)
  • {{JULIANDAY|300|3|1}} ينتج 1830692 (proleptic) (first day of difference between the Julian and proleptic Gregorian calendars, in leap Julian year 300 AD, not leap in the proleptic Gregorian calendar)
  • {{JULIANDAY|325|3|21}} ينتج 1839843 (proleptic) (spring equinox observed at the Christian مجمع نيقية, taken as a reference for aligning the Julian calendar to the proleptic Gregorian)
  • {{JULIANDAY|1782|10|14}} ينتج 2372209 (proleptic) (last proleptic Gregorian day, actually the 4th of October in the Julian calendar)
  • {{JULIANDAY|1782|10|15}} ينتج 2372210 (first non proleptic Gregorian day, equals the 5th of October in the previous Julian calendar)
  • {{JULIANDAY|1858|11|16|12|00|00}} ينتج 2400000 (start of epoch for the Reduced Julian Day, RJD)
  • {{JULIANDAY|1858|11|17|00|00|00}} ينتج 2400000.5 (start of epoch for the Modified Julian Day, MJD)
  • {{JULIANDAY|1968|05|24|00|00|00}} ينتج 2440000.5 (start of epoch for the NASA's Truncated Julian Day, TJD)
  • {{JULIANDAY|1995|10|10|00|00|00}} ينتج 2450000.5 (start of epoch for the current NIST's Truncated Julian Day, TJD mod 10000)
  • {{JULIANDAY|1999|12|31}} ينتج 2451544
  • {{JULIANDAY|2000|1|1}} ينتج 2451545 (the “مشكلة عام 2000's day” and millennium celebrations)
  • {{JULIANDAY|2000|1|2}} ينتج 2451546
  • {{JULIANDAY|2000|2|1}} ينتج 2451576
  • {{JULIANDAY|2000|3|1}} ينتج 2451605
  • {{JULIANDAY|2000|12|31}} ينتج 2451910 (last day of the ألفية 2 and of the القرن 20 in the Gregorian calendar)
  • {{JULIANDAY|2001|1|1}} ينتج 2451911 (first day of the ألفية 3 and of the القرن 21 in the Gregorian calendar)
  • {{JULIANDAY|2001|12|31}} ينتج 2452275
  • {{JULIANDAY|2002|12|31}} ينتج 2452640
  • {{JULIANDAY|2003|12|31}} ينتج 2453005
  • {{JULIANDAY|2006|2|1}} ينتج 2453768
  • {{JULIANDAY|2006|3|1}} ينتج 2453796
  • {{JULIANDAY|2006|3|31}} ينتج 2453826
  • {{JULIANDAY|2006|4|30|0|0|0}} ينتج 2453855.5
  • {{JULIANDAY|2006|4|30|01|35|48}} ينتج 2453855.5665278
  • {{JULIANDAY|2006|4|30|11|59|60}} ينتج 2453856
  • {{JULIANDAY|2006|4|30|12.0}} ينتج 2453856
  • {{JULIANDAY|2006|4|30}} ينتج 2453856
  • {{JULIANDAY|2006|4|30|23|59|59}} ينتج 2453856.4999884
  • {{JULIANDAY|2006|5|1|00|00|00}} ينتج 2453856.5
  • {{JULIANDAY|2006|5|1|12|00|00}} ينتج 2453857
  • {{JULIANDAY|2006|5|1}} ينتج 2453857
See also:


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