method
jd_to_mjd
v1_9_1_378 -
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Class: Date
- 1_8_6_287
- 1_8_7_72
- 1_8_7_330
- 1_9_1_378 (0)
- 1_9_2_180 (0)
- 1_9_3_125
- 1_9_3_392
- 2_1_10
- 2_2_9
- 2_4_6
- 2_5_5
- 2_6_3
- What's this?
Related methods
- Class methods (100)
- ajd_to_amjd (<= v1_8_7_330)
- ajd_to_jd (<= v1_8_7_330)
- amjd_to_ajd (<= v1_8_7_330)
- civil
- civil_to_jd (<= v1_8_7_330)
- commercial
- commercial_to_jd (<= v1_8_7_330)
- complete_frags
- day_fraction_to_time (<= v1_8_7_330)
- deprecated_alias (<= v1_8_7_330)
- deprecated_class_method_alias (<= v1_8_7_330)
- fix_style (<= v1_8_7_330)
- gregorian? (<= v1_8_7_330)
- gregorian_leap?
- httpdate
- _httpdate
- iso8601
- _iso8601
- jd
- jd_to_ajd (<= v1_8_7_330)
- jd_to_civil (<= v1_8_7_330)
- jd_to_commercial (<= v1_8_7_330)
- jd_to_ld (<= v1_8_7_330)
- jd_to_mjd (<= v1_8_7_330)
- jd_to_ordinal (<= v1_8_7_330)
- jd_to_wday (<= v1_8_7_330)
- jd_to_weeknum (<= v1_8_7_330)
- jisx0301
- _jisx0301
- json_create
- julian? (<= v1_8_7_330)
- julian_leap?
- ld_to_jd (<= v1_8_7_330)
- leap?
- _load (>= v1_8_6_287)
- mjd_to_jd (<= v1_8_7_330)
- new
- new!
- new_by_frags
- now
- nth_kday
- num_pattern?
- once
- ordinal
- ordinal_to_jd (<= v1_8_7_330)
- parse
- _parse
- _parse_beat (<= v1_8_6_287)
- _parse_day
- _parse_ddd
- _parse_dot
- _parse_eu
- _parse_iso
- _parse_iso2
- _parse_jis
- _parse_mday
- _parse_mon
- _parse_sla
- _parse_sla_eu (<= v1_8_6_287)
- _parse_sla_ja (<= v1_8_6_287)
- _parse_sla_us (<= v1_8_6_287)
- _parse_time
- _parse_us
- _parse_vms
- _parse_year
- rewrite_frags
- rfc2822
- _rfc2822
- rfc3339
- _rfc3339
- rfc822
- _rfc822
- s3e
- strptime
- _strptime
- _strptime_i
- test_all (>= v2_6_3)
- test_civil (>= v2_6_3)
- test_commercial (>= v2_6_3)
- test_nth_kday (>= v2_6_3)
- test_ordinal (>= v2_6_3)
- test_unit_conv (>= v2_6_3)
- test_weeknum (>= v2_6_3)
- time_to_day_fraction (<= v1_8_7_330)
- today
- valid_civil?
- valid_commercial?
- valid_date?
- valid_date_frags?
- valid_jd?
- valid_nth_kday?
- valid_ordinal?
- valid_time?
- valid_time_frags?
- valid_weeknum?
- weeknum
- weeknum_to_jd (<= v1_8_7_330)
- xmlschema
- _xmlschema
- zone_to_diff (<= v1_8_7_330)
- Instance methods (167)
- <<
- <=>
- == (>= v1_9_2_180)
- ===
- >>
- -
- -@ (>= v1_9_2_180)
- / (>= v1_9_2_180)
- * (>= v1_9_2_180)
- ** (>= v1_9_2_180)
- % (>= v1_9_2_180)
- +
- +@ (>= v1_9_2_180)
- abs (>= v1_9_2_180)
- ajd
- ajd_to_amjd
- ajd_to_jd
- amjd
- amjd_to_ajd
- asctime
- as_json (>= v1_9_3_125)
- ceil (>= v1_9_2_180)
- civil
- civil_to_jd
- coerce (>= v1_9_2_180)
- commercial
- commercial_to_jd
- ctime
- cwday
- cweek
- cwyear
- day
- day_fraction
- day_fraction_to_time
- div (>= v1_9_2_180)
- divmod (>= v1_9_2_180)
- downto
- _dump (<= v1_8_7_330)
- dx_addsub (>= v1_9_2_180)
- dx_conv0 (>= v1_9_2_180)
- dx_conv1 (>= v1_9_2_180)
- dx_muldiv (>= v1_9_2_180)
- emit
- emit_a
- emit_ad
- emit_au
- emit_n
- emit_sn
- emit_w
- emit_z
- england
- eql?
- fill (>= v2_6_3)
- find_fdom
- find_fdoy
- find_ldom
- find_ldoy
- fix_style
- floor (>= v1_9_2_180)
- friday? (>= v1_9_3_125)
- gregorian
- gregorian?
- hash
- hour
- httpdate
- initialize_copy (>= v1_9_3_125)
- inspect
- inspect_raw (>= v2_6_3)
- integer? (>= v1_9_2_180)
- iso8601
- italy
- jd
- jd_to_ajd
- jd_to_civil
- jd_to_commercial
- jd_to_ld
- jd_to_mjd
- jd_to_nth_kday
- jd_to_ordinal
- jd_to_wday
- jd_to_weeknum
- jisx0301
- julian
- julian?
- ld
- ld_to_jd
- leap?
- marshal_dump
- marshal_dump_old (>= v2_6_3)
- marshal_load
- mday
- min
- minute
- mjd
- mjd_to_jd
- modulo (>= v1_9_2_180)
- mon
- monday? (>= v1_9_3_125)
- month
- new_offset
- new_start
- next
- next_day
- next_month
- next_year
- nth_kday?
- nth_kday_to_jd
- offset
- ordinal
- ordinal_to_jd
- prev_day
- prev_month
- prev_year
- quo (>= v1_9_2_180)
- quotient (>= v1_9_2_180)
- quotrem (>= v1_9_2_180)
- remainder (>= v1_9_2_180)
- rfc2822
- rfc3339
- rfc822
- round (>= v1_9_2_180)
- saturday? (>= v1_9_3_125)
- sec
- sec_fraction
- second
- second_fraction
- start
- step
- strftime
- succ
- sunday? (>= v1_9_3_125)
- thursday? (>= v1_9_3_125)
- time
- time_to_day_fraction
- to_c (>= v1_9_2_180)
- to_date
- to_datetime
- to_f (>= v1_9_2_180)
- to_i (>= v1_9_2_180)
- to_int (>= v1_9_2_180)
- to_json
- to_r (>= v1_9_2_180)
- to_s
- to_time
- to_yaml
- truncate (>= v1_9_2_180)
- tuesday? (>= v1_9_3_125)
- upto
- _valid_civil?
- _valid_commercial?
- _valid_jd?
- _valid_nth_kday?
- _valid_ordinal?
- _valid_time?
- _valid_weeknum?
- wday
- wednesday? (>= v1_9_3_125)
- weeknum0
- weeknum1
- weeknum_to_jd
- wnum0
- wnum1
- xmlschema
- yday
- year
- zone
- zone_to_diff
= private
= protected
jd_to_mjd(jd)
public
Convert a Julian Day Number to a Modified Julian Day Number.
Show source
# File lib/date.rb, line 556 def jd_to_mjd(jd) jd - MJD_EPOCH_IN_CJD end