Ruby Date ajd()方法

Date#ajd()是一个Date类方法，用于返回天文朱利安日的数字。

语法。Date.ajd()

参数。日期值

返回：天文学上的朱利安日数字。

例子 #1 :

# Ruby code for Date.ajd() method
  
# loading date
require 'date'
  
# declaring Date 
a = Date.new(2019, 1, 1)
  
# declaring Date
b = Date.jd(2452004)
  
# declaring Date
c = Date.ordinal(2019, 12)
  
# Date 
puts "Date a : #{a}\n\n"
puts "Date b : #{b}\n\n"
puts "Date c : #{c}\n\n\n\n"
  
  
# ajd form 
puts "Date a ajd form : #{a.ajd}\n\n"
puts "Date b ajd form : #{b.ajd}\n\n"
puts "Date c ajd form : #{c.ajd}\n\n"

输出:

Date a : 2019-01-01

Date b : 2001-04-04

Date c : 2019-01-12



Date a ajd form : 4916969/2

Date b ajd form : 4904007/2

Date c ajd form : 4916991/2

例子 #2 :

# Ruby code for Date.ajd() method
  
# loading date
require 'date'
  
# declaring Date 
a = Date.parse('2019-01-01')
  
# declaring Date
b = Date.strptime('03-12-2019', '%d-%m-%Y')
  
# declaring Date
c = Date.commercial(2019, 5, 6)
  
# Date 
puts "Date a : #{a}\n\n"
puts "Date b : #{b}\n\n"
puts "Date c : #{c}\n\n\n\n"
  
  
# ajd form 
puts "Date a ajd form : #{a.ajd}\n\n"
puts "Date b ajd form : #{b.ajd}\n\n"
puts "Date c ajd form : #{c.ajd}\n\n"

输出:

Date a : 2019-01-01

Date b : 2019-12-03

Date c : 2019-02-02



Date a ajd form : 4916969/2

Date b ajd form : 4917641/2

Date c ajd form : 4917033/2