[BK-2020-03.git] / user / bkdatev

#!/usr/bin/env bash
# Desc: Baltakatei's verbose date command
# Usage: bkdatev [args]
# Example: bkdatev --date="2001-09-11T09:02:59-04"
# Version: 0.3.2
# Depends: GNU Coreutils 8.32, Bash 3.2.57
# Ref/Attrib: [1] "ISO 8601". Wikipedia. https://en.wikipedia.org/wiki/ISO_8601
#             [2] "Changing the Locale in Wine" https://stackoverflow.com/a/16428951
#             [3] "Shanghai vs Beijing" https://bugs.launchpad.net/ubuntu/+source/libgweather/+bug/228554
# Notes:  * Check `ls -R /usr/share/zoneinfo` for time zone names.
#         * Check `cat /usr/share/i18n/SUPPORTED` for supported locales.
#         * For list of valid locales, see: https://manpages.ubuntu.com/manpages/bionic/man3/DateTime::Locale::Catalog.3pm.html
#         * Locations chosen for population, personal signifiance, and spatial coverage.
#         * For International Atomic Time (TAI), use offsets from UTC provided in `/usr/share/zoneinfo/leap-seconds.list`.
#         * Compatibility with macOS may be limited if any arguments
#             are provided when running `bkdatev`; e.g. passing a
#             `--date` option to `bkdatev` will fail.

yell() { echo "$0: $*" >&2; }
die() { yell "$*"; exit 111; }
must() { "$@" || die "cannot $*"; }
insertStr() {
    # Desc: Inserts a string into another string at a specified position.
    # Input: arg1: str   str_rec  String to receive insertion
    #        arg2: int   pos      Insertion position (0 = append to front)
    #        arg3: str   str_ins  String to be inserted
    # Output: stdout:    Combined string
    # Version: 0.0.2
    # Depends: BK-2020-03: yell(), die(), must()
    # Ref/Attrib: * BK-2020-03: https://gitlab.com/baltakatei/baltakatei-exdev/
    #             * Cooper, Mendel. “Advanced Bash-Scripting Guide: Manipulating Strings”. tldp.org https://tldp.org/LDP/abs/html/string-manipulation.html

    local str_rec pos str_ins re len_str_rec;
    local pfx_pos_start pfx_len pfx;
    local sfx_pos_start sfx_len sfx;

    # Check args
    if [[ $# -ne 3 ]]; then
        yell "ERROR:Invalid argument count:$#";
        return 1; fi;
    re='^[0-9]+$';
    if [[ ! "$2" =~ $re ]]; then
        yell "ERROR:Not an int:$2";
        return 1; fi;
    str_rec="$1";
    pos="$2";
    str_ins="$3";

    # Calculate string stats
    len_str_rec="${#str_rec}";

    # Form prefix
    pfx_pos_start="0";
    pfx_len="$pos";
    pfx="${str_rec:$pfx_pos_start:$pfx_len}";

    # Form suffix
    sfx_pos_start="$(( pos ))";
    sfx_len="$(( len_str_rec - pos ))";
    sfx="${str_rec:$sfx_pos_start:$sfx_len}";

    # Print output to stdout
    printf "%s%s%s\n" "$pfx" "$str_ins" "$sfx";
}; # Insert string provided at indicated position via stdout
line_sep() {
    # Input: var: n_ln
    local skip_every=4;
    ((n_ln++));
    if ! ((n_ln % "$skip_every")); then
        printf "\n";
    fi;
    return 0;
}; # periodically print separating blank line
get_tz_offset() {
    # Desc: Get from 'date' the timezone UTC offset in a way
    #   compatible with both GNU Coreutils and BSD versions.
    # Input: env var: TZ  (time zone for date; e.g. 'America/Denver')
    # Depends: date (GNU Coreutils 8.32 or BSD), rev
    local ntz ntz ntz_out;
    local last2;

    # Get numeric time zone string in way compatible with GNU Coreutils and BSD
    ntz="$(date "+%z")"; # e.g. "+0530"

    # Check if last two characters are trailing zeros that can be removed.
    last2="${ntz:3:2}"; # assumes $ntz is 5 characters (i.e. "±HHMM")
    #last2="$(rev <<< $ntz)" && last2="${last2:0:2}" && last2="$(rev <<< "$last2")";
    if [[ "$last2" == "00" ]]; then
        ## ntz_out is truncated by 2 characters
	len_ntz="${#ntz}";
	len_ntz_out="$(( len_ntz - 2 ))";
	ntz_out=""${ntz:0:$len_ntz_out};
    else
        ## ntz_out is ntz with semicolon inserted after HH
        ntz_out="$(insertStr "$ntz" 3 ":" )";
    fi;
    
    # Output via stdout
    printf "%s" "$ntz_out";
}; # Format numeric time zone (for BSD date compatibility)
print_dateline() {
    # Input: var: $id
    #        var: $fs_1
    #        var: $fs_2
    #        var: $fs_3
    #        args: $@
    #        env var: TZ (time zone for date; e.g. 'America/Denver')
    # Output: stdout
    # Depends: printf, date
    #          get_tz_offset()
    # Ref/Attrib: * Truncate string in printf https://stackoverflow.com/a/46812677
    local s_1 s_2 s_2_tz s_3 s_4;

    s_1="$id";
    s_2="$(date "$@" "$fs_1")"; # ISO-8601 without numeric timezone
    s_3="$(date "$@" "$fs_2")"; # Alternate ISO-8601 expressions
    s_4="$(date "$@" "$fs_3")"; # locale-specific date strings

    # Append numeric timezone to $s_2 with appropriate format
    #   (e.g. '-07' for 'Arizona', '+05:45' for 'Asia/Kathmandu')
    s_2_tz="$(get_tz_offset)";
    s_2="$( printf "%s%s" "$s_2" "$s_2_tz" )";

    printf "%-10.10s %-25.25s (%-20.20s) (%s)" "$s_1" "$s_2" "$s_3" "$s_4";
    printf "\n";

    unset fs_1 fs_2 fs_3 fs_4;
    }; # print line of dates
main() {
    n_ln=0; # for line_sep()
    unset LC_TIME; # Fall back to time zone-specific locale settings.
    
    # format strings
    fs_iso8601="+%Y-%m-%dT%H:%M:%S"; # typical ISO-8601 without timezone
    fs_iso8601_etc="+%G-W%V-%u, %Y-%j"; # alternate ISO-8601 dates
    fs_locale="+%Z; %A; %c"; # locale-specific date strings

    # vars for print_dateline()
    fs_1="$fs_iso8601";
    fs_2="$fs_iso8601_etc";
    fs_3="$fs_locale";

    # UTC (pop. (2021): 7,837,000,000)
    (
        export TZ=UTC;
        id="UTC";
        fs_3="+%s seconds since 1970-01-01T00:00+00";
        print_dateline "$@";
    ); line_sep;

    # Hawaii
    (
        export TZ=US/Hawaii;
        export LANG="haw-US.UTF8";
        id="HAWAII";
        print_dateline "$@";
    ); line_sep;

    # Los Angeles, USA
    (
        export TZ=America/Los_Angeles;
        export LANG="en_US.UTF-8";
        id="LOS ANGELES";
        print_dateline "$@";
    ); line_sep;

    # Denver, USA (pop. (2021): 711,463)
    (
        export TZ=America/Denver;
        export LANG="en_US.UTF-8";
        id="DENVER";
        print_dateline "$@";
    ); line_sep;

    # Chicago, USA (pop. (2021): 711,463)
    (
        export TZ=America/Chicago;
        export LANG="en_US.UTF-8";
        id="CHICAGO";
        print_dateline "$@";
    ); line_sep;

    # Mexico City, Mexico (pop. (2018): 21,804,515)
    (
        export TZ=America/Mexico_City;
        export LANG="es_MX.UTF8";
        id="MEXICO CITY";
        print_dateline "$@";
    ); line_sep;

    # Panama City, Panama
    (
        export TZ=America/Panama;
        export LANG="es_PA.UTF8";
        id="PANAMA CITY";
        print_dateline "$@";
    ); line_sep;

    # New York, USA (pop. (2018): 20,140,470)
    (
        export TZ=America/New_York;
        export LANG="en_US.UTF-8";
        id="NEW YORK";
        print_dateline "$@";
    ); line_sep;

    # São Paulo, Brazil
    (
        export TZ=America/Sao_Paulo;
        export LANG="pt_BR.UTF8";
        id="SAO PAULO";
        print_dateline "$@";
    ); line_sep;

    # Buenos Aires
    (
        export TZ=America/Argentina/Buenos_Aires;
        export LANG="es_AR.UTF8";
        id="BUENOS AIRES";
        print_dateline "$@";
    ); line_sep;

    # London, England
    (
        export TZ=Europe/London;
        export LANG="en_GB.UTF-8";
        id="LONDON";
        print_dateline "$@";
    ); line_sep;

    # Kinshasa, Africa
    (
        export TZ=Africa/Kinshasa;
        export LANG="ln_CD.UTF8";
        id="KINSHASA";
        print_dateline "$@";
    ); line_sep;

    # Lagos, Africa
    (
        export TZ=Africa/Lagos;
        export LANG="en_NG.UTF8";
        id="LAGOS";
        print_dateline "$@";
    ); line_sep;

    # Paris, France
    (
        export TZ=Europe/Paris;
        export LANG="fr_FR.UTF8";
        id="PARIS";
        print_dateline "$@";
    ); line_sep;

    # Stockholm, Sweden
    (
        export TZ=Europe/Stockholm;
        export LANG="sv_SE.UTF8";
        id="STOCKHOLM";
        print_dateline "$@";
    ); line_sep;

    # Cairo, Egypt
    (
        export TZ=Africa/Cairo;
        export LANG="ar_EG.UTF8";
        id="CAIRO";
        print_dateline "$@";
    ); line_sep;

    # Athens (pop. (2020): 3,526,887)
    (
        export TZ=Europe/Athens;
        export LANG="el_GR.UTF8";
        id="ATHENS";
        print_dateline "$@";
    ); line_sep;

    # Istanbul (pop. (2020): 13,719,061)
    (
        export TZ=Asia/Istanbul;
        export LANG="tr_TR.UTF8";
        id="ISTANBUL";
        print_dateline "$@";
    ); line_sep;

    # Tehran, Iran
    (
        export TZ=Asia/Tehran;
        export LANG="fa_IR.UTF8";
        id="TEHRAN";
        print_dateline "$@";
    ); line_sep;

    # Moscow, Russia
    (
        export TZ=Europe/Moscow;
        export LANG="ru_RU.UTF-8";
        id="MOSCOW";
        print_dateline "$@";
    ); line_sep;

    # Kyiv, Ukraine (pop. (2021): 2,962,180)
    (
        export TZ=Europe/Kyiv;
        export LANG="uk_UA.UTF-8";
        id="KYIV";
        print_dateline "$@";
    ); line_sep;

    # Delhi, India (pop. (2018): 29,000,000)
    (
        export TZ=Asia/Kolkata;
        export LANG="hi_IN.UTF-8";
        id="DELHI";
        print_dateline "$@";
    ); line_sep;

    # Jakarta, Indonesia (pop. (2018): 33,430,285)
    (
        export TZ=Asia/Jakarta;
        export LANG="id_ID.UTF8";
        id="JAKARTA";
        print_dateline "$@";
    ); line_sep;

    # Singapore, Singapore (pop (2018): 5,792,000)
    (
        export TZ=Asia/Singapore;
        export LANG="en_SG.UTF-8";
        id="SINGAPORE";
        print_dateline "$@";
    ); line_sep;

    # Beijing, China (pop. (2018): 19,618,000)
    (
        export TZ=Asia/Shanghai; # [3]
        export LANG="zh_CN.UTF-8";
        id="BEIJING";
        print_dateline "$@";
    ); line_sep;

    # Taipei, Taiwan (pop (2019): 7,034,084)
    (
        export TZ=Asia/Taipei; # [3]
        export LANG="zh_TW.UTF-8";
        id="TAIPEI";
        print_dateline "$@";
    ); line_sep;    
    
    # Tokyo, Japan (pop. (2018): 37,274,000)
    (
        export TZ=Asia/Tokyo;
        export LANG="ja_JP.UTF8";
        id="TOKYO";
        print_dateline "$@";
    ); line_sep;

    # Seoul, South Korea (pop. (2018): 25,514,000)
    (
        export TZ=Asia/Seoul;
        export LANG="ko_KR.UTF8";
        id="SEOUL";
        print_dateline "$@";
    ); line_sep;

    # Pyongyang, North Korea
    (
        export TZ=Asia/Pyongyang;
        export LANG="ko_KP.UTF8";
        id="PYONGYANG";
        print_dateline "$@";
    ); line_sep;
    
    # Sydney, Australia
    (
        export TZ=Australia/Sydney;
        export LANG="en_AU.UTF8";
        id="SYDNEY";
        print_dateline "$@";
    ); line_sep;

    # Guam
    (
        export TZ=Pacific/Guam;
        export LANG="en_GU.UTF8";
        id="GUAM";
        print_dateline "$@";
    ); line_sep;

    # Auckland, New Zealand
    (
        export TZ=Pacific/Auckland;
        export LANG="en_NZ.UTF8";
        id="AUCKLAND";
        print_dateline "$@";
    ); line_sep;
    
    return 0;
}; # main program

main "$@";

# Author: Steven Baltakatei Sandoval
# License: GPLv3+
Commit	Line	Data
4143a6ea SBS	1	#!/usr/bin/env bash
	2	# Desc: Baltakatei's verbose date command
	3	# Usage: bkdatev [args]
	4	# Example: bkdatev --date="2001-09-11T09:02:59-04"
79cb35dc SBS	5	# Version: 0.3.2
79cb35dc SBS	6	# Depends: GNU Coreutils 8.32, Bash 3.2.57
4143a6ea SBS	7	# Ref/Attrib: [1] "ISO 8601". Wikipedia. https://en.wikipedia.org/wiki/ISO_8601
	8	# [2] "Changing the Locale in Wine" https://stackoverflow.com/a/16428951
	9	# [3] "Shanghai vs Beijing" https://bugs.launchpad.net/ubuntu/+source/libgweather/+bug/228554
	10	# Notes: * Check `ls -R /usr/share/zoneinfo` for time zone names.
	11	# * Check `cat /usr/share/i18n/SUPPORTED` for supported locales.
	12	# * For list of valid locales, see: https://manpages.ubuntu.com/manpages/bionic/man3/DateTime::Locale::Catalog.3pm.html
	13	# * Locations chosen for population, personal signifiance, and spatial coverage.
514ae735	14	# * For International Atomic Time (TAI), use offsets from UTC provided in `/usr/share/zoneinfo/leap-seconds.list`.
79cb35dc SBS	15	# * Compatibility with macOS may be limited if any arguments
	16	# are provided when running `bkdatev`; e.g. passing a
	17	# `--date` option to `bkdatev` will fail.
4143a6ea	18
b29fc43b SBS	19	yell() { echo "$0: $*" >&2; }
	20	die() { yell "$*"; exit 111; }
	21	must() { "$@" \|\| die "cannot $*"; }
	22	insertStr() {
	23	# Desc: Inserts a string into another string at a specified position.
	24	# Input: arg1: str str_rec String to receive insertion
	25	# arg2: int pos Insertion position (0 = append to front)
	26	# arg3: str str_ins String to be inserted
	27	# Output: stdout: Combined string
	28	# Version: 0.0.2
	29	# Depends: BK-2020-03: yell(), die(), must()
	30	# Ref/Attrib: * BK-2020-03: https://gitlab.com/baltakatei/baltakatei-exdev/
	31	# * Cooper, Mendel. “Advanced Bash-Scripting Guide: Manipulating Strings”. tldp.org https://tldp.org/LDP/abs/html/string-manipulation.html
	32
	33	local str_rec pos str_ins re len_str_rec;
	34	local pfx_pos_start pfx_len pfx;
	35	local sfx_pos_start sfx_len sfx;
	36
	37	# Check args
	38	if [[ $# -ne 3 ]]; then
	39	yell "ERROR:Invalid argument count:$#";
	40	return 1; fi;
	41	re='^[0-9]+$';
	42	if [[ ! "$2" =~ $re ]]; then
	43	yell "ERROR:Not an int:$2";
	44	return 1; fi;
	45	str_rec="$1";
	46	pos="$2";
	47	str_ins="$3";
	48
	49	# Calculate string stats
	50	len_str_rec="${#str_rec}";
	51
	52	# Form prefix
	53	pfx_pos_start="0";
	54	pfx_len="$pos";
	55	pfx="${str_rec:$pfx_pos_start:$pfx_len}";
	56
	57	# Form suffix
	58	sfx_pos_start="$(( pos ))";
	59	sfx_len="$(( len_str_rec - pos ))";
	60	sfx="${str_rec:$sfx_pos_start:$sfx_len}";
	61
	62	# Print output to stdout
	63	printf "%s%s%s\n" "$pfx" "$str_ins" "$sfx";
	64	}; # Insert string provided at indicated position via stdout
4143a6ea SBS	65	line_sep() {
	66	# Input: var: n_ln
	67	local skip_every=4;
	68	((n_ln++));
	69	if ! ((n_ln % "$skip_every")); then
	70	printf "\n";
	71	fi;
	72	return 0;
	73	}; # periodically print separating blank line
b29fc43b SBS	74	get_tz_offset() {
	75	# Desc: Get from 'date' the timezone UTC offset in a way
	76	# compatible with both GNU Coreutils and BSD versions.
	77	# Input: env var: TZ (time zone for date; e.g. 'America/Denver')
	78	# Depends: date (GNU Coreutils 8.32 or BSD), rev
	79	local ntz ntz ntz_out;
	80	local last2;
	81
	82	# Get numeric time zone string in way compatible with GNU Coreutils and BSD
	83	ntz="$(date "+%z")"; # e.g. "+0530"
	84
	85	# Check if last two characters are trailing zeros that can be removed.
	86	last2="${ntz:3:2}"; # assumes $ntz is 5 characters (i.e. "±HHMM")
	87	#last2="$(rev <<< $ntz)" && last2="${last2:0:2}" && last2="$(rev <<< "$last2")";
	88	if [[ "$last2" == "00" ]]; then
	89	## ntz_out is truncated by 2 characters
be603b6f SBS	90	len_ntz="${#ntz}";
	91	len_ntz_out="$(( len_ntz - 2 ))";
	92	ntz_out=""${ntz:0:$len_ntz_out};
b29fc43b SBS	93	else
	94	## ntz_out is ntz with semicolon inserted after HH
	95	ntz_out="$(insertStr "$ntz" 3 ":" )";
	96	fi;
	97
	98	# Output via stdout
	99	printf "%s" "$ntz_out";
	100	}; # Format numeric time zone (for BSD date compatibility)
4143a6ea SBS	101	print_dateline() {
	102	# Input: var: $id
	103	# var: $fs_1
	104	# var: $fs_2
	105	# var: $fs_3
	106	# args: $@
b29fc43b	107	# env var: TZ (time zone for date; e.g. 'America/Denver')
4143a6ea SBS	108	# Output: stdout
4143a6ea SBS	109	# Depends: printf, date
b29fc43b	110	# get_tz_offset()
4143a6ea	111	# Ref/Attrib: * Truncate string in printf https://stackoverflow.com/a/46812677
b29fc43b	112	local s_1 s_2 s_2_tz s_3 s_4;
4143a6ea SBS	113
4143a6ea SBS	114	s_1="$id";
b29fc43b SBS	115	s_2="$(date "$@" "$fs_1")"; # ISO-8601 without numeric timezone
	116	s_3="$(date "$@" "$fs_2")"; # Alternate ISO-8601 expressions
	117	s_4="$(date "$@" "$fs_3")"; # locale-specific date strings
	118
	119	# Append numeric timezone to $s_2 with appropriate format
	120	# (e.g. '-07' for 'Arizona', '+05:45' for 'Asia/Kathmandu')
	121	s_2_tz="$(get_tz_offset)";
	122	s_2="$( printf "%s%s" "$s_2" "$s_2_tz" )";
4143a6ea SBS	123
	124	printf "%-10.10s %-25.25s (%-20.20s) (%s)" "$s_1" "$s_2" "$s_3" "$s_4";
	125	printf "\n";
	126
	127	unset fs_1 fs_2 fs_3 fs_4;
	128	}; # print line of dates
	129	main() {
	130	n_ln=0; # for line_sep()
06ff9ce1	131	unset LC_TIME; # Fall back to time zone-specific locale settings.
4143a6ea SBS	132
4143a6ea SBS	133	# format strings
b29fc43b	134	fs_iso8601="+%Y-%m-%dT%H:%M:%S"; # typical ISO-8601 without timezone
4143a6ea SBS	135	fs_iso8601_etc="+%G-W%V-%u, %Y-%j"; # alternate ISO-8601 dates
	136	fs_locale="+%Z; %A; %c"; # locale-specific date strings
	137
	138	# vars for print_dateline()
	139	fs_1="$fs_iso8601";
	140	fs_2="$fs_iso8601_etc";
	141	fs_3="$fs_locale";
	142
	143	# UTC (pop. (2021): 7,837,000,000)
	144	(
	145	export TZ=UTC;
	146	id="UTC";
e202e295	147	fs_3="+%s seconds since 1970-01-01T00:00+00";
4143a6ea SBS	148	print_dateline "$@";
	149	); line_sep;
	150
	151	# Hawaii
	152	(
	153	export TZ=US/Hawaii;
	154	export LANG="haw-US.UTF8";
	155	id="HAWAII";
	156	print_dateline "$@";
	157	); line_sep;
	158
	159	# Los Angeles, USA
	160	(
	161	export TZ=America/Los_Angeles;
	162	export LANG="en_US.UTF-8";
	163	id="LOS ANGELES";
	164	print_dateline "$@";
	165	); line_sep;
	166
	167	# Denver, USA (pop. (2021): 711,463)
	168	(
	169	export TZ=America/Denver;
	170	export LANG="en_US.UTF-8";
	171	id="DENVER";
	172	print_dateline "$@";
	173	); line_sep;
	174
	175	# Chicago, USA (pop. (2021): 711,463)
	176	(
	177	export TZ=America/Chicago;
	178	export LANG="en_US.UTF-8";
	179	id="CHICAGO";
	180	print_dateline "$@";
	181	); line_sep;
	182
	183	# Mexico City, Mexico (pop. (2018): 21,804,515)
	184	(
	185	export TZ=America/Mexico_City;
	186	export LANG="es_MX.UTF8";
	187	id="MEXICO CITY";
	188	print_dateline "$@";
	189	); line_sep;
	190
	191	# Panama City, Panama
	192	(
	193	export TZ=America/Panama;
	194	export LANG="es_PA.UTF8";
	195	id="PANAMA CITY";
	196	print_dateline "$@";
	197	); line_sep;
	198
	199	# New York, USA (pop. (2018): 20,140,470)
	200	(
	201	export TZ=America/New_York;
	202	export LANG="en_US.UTF-8";
	203	id="NEW YORK";
	204	print_dateline "$@";
	205	); line_sep;
	206
	207	# São Paulo, Brazil
	208	(
	209	export TZ=America/Sao_Paulo;
	210	export LANG="pt_BR.UTF8";
	211	id="SAO PAULO";
212	print_dateline "$@";
213	); line_sep;
214
215	# Buenos Aires
216	(
217	export TZ=America/Argentina/Buenos_Aires;
218	export LANG="es_AR.UTF8";
219	id="BUENOS AIRES";
220	print_dateline "$@";
221	); line_sep;
222
223	# London, England
224	(
225	export TZ=Europe/London;
226	export LANG="en_GB.UTF-8";
227	id="LONDON";
228	print_dateline "$@";
229	); line_sep;
230
231	# Kinshasa, Africa
232	(
233	export TZ=Africa/Kinshasa;
234	export LANG="ln_CD.UTF8";
235	id="KINSHASA";
236	print_dateline "$@";
237	); line_sep;
238
239	# Lagos, Africa
240	(
241	export TZ=Africa/Lagos;
242	export LANG="en_NG.UTF8";
243	id="LAGOS";
244	print_dateline "$@";
245	); line_sep;
246
247	# Paris, France
248	(
249	export TZ=Europe/Paris;
250	export LANG="fr_FR.UTF8";
251	id="PARIS";
252	print_dateline "$@";
253	); line_sep;
254
255	# Stockholm, Sweden
256	(
257	export TZ=Europe/Stockholm;
258	export LANG="sv_SE.UTF8";
259	id="STOCKHOLM";
260	print_dateline "$@";
261	); line_sep;
262
263	# Cairo, Egypt
264	(
265	export TZ=Africa/Cairo;
266	export LANG="ar_EG.UTF8";
267	id="CAIRO";
268	print_dateline "$@";
269	); line_sep;
270
271	# Athens (pop. (2020): 3,526,887)
272	(
273	export TZ=Europe/Athens;
274	export LANG="el_GR.UTF8";
275	id="ATHENS";
276	print_dateline "$@";
277	); line_sep;
278
279	# Istanbul (pop. (2020): 13,719,061)
280	(
281	export TZ=Asia/Istanbul;
282	export LANG="tr_TR.UTF8";
283	id="ISTANBUL";
284	print_dateline "$@";
285	); line_sep;
286
287	# Tehran, Iran
288	(
289	export TZ=Asia/Tehran;
290	export LANG="fa_IR.UTF8";
291	id="TEHRAN";
292	print_dateline "$@";
293	); line_sep;
294
295	# Moscow, Russia
296	(
297	export TZ=Europe/Moscow;
298	export LANG="ru_RU.UTF-8";
299	id="MOSCOW";
300	print_dateline "$@";
301	); line_sep;
302
303	# Kyiv, Ukraine (pop. (2021): 2,962,180)
304	(
305	export TZ=Europe/Kyiv;
306	export LANG="uk_UA.UTF-8";
307	id="KYIV";
308	print_dateline "$@";
309	); line_sep;
310
311	# Delhi, India (pop. (2018): 29,000,000)
312	(
313	export TZ=Asia/Kolkata;
314	export LANG="hi_IN.UTF-8";
315	id="DELHI";
316	print_dateline "$@";
317	); line_sep;
318
319	# Jakarta, Indonesia (pop. (2018): 33,430,285)
320	(
321	export TZ=Asia/Jakarta;
322	export LANG="id_ID.UTF8";
323	id="JAKARTA";
324	print_dateline "$@";
325	); line_sep;
326
327	# Singapore, Singapore (pop (2018): 5,792,000)
328	(
329	export TZ=Asia/Singapore;
330	export LANG="en_SG.UTF-8";
331	id="SINGAPORE";
332	print_dateline "$@";
333	); line_sep;
334
335	# Beijing, China (pop. (2018): 19,618,000)
336	(
337	export TZ=Asia/Shanghai; # [3]
338	export LANG="zh_CN.UTF-8";
339	id="BEIJING";
340	print_dateline "$@";
341	); line_sep;
342
20857531 SBS	343	# Taipei, Taiwan (pop (2019): 7,034,084)
	344	(
	345	export TZ=Asia/Taipei; # [3]
	346	export LANG="zh_TW.UTF-8";
	347	id="TAIPEI";
	348	print_dateline "$@";
	349	); line_sep;
	350
4143a6ea SBS	351	# Tokyo, Japan (pop. (2018): 37,274,000)
	352	(
	353	export TZ=Asia/Tokyo;
	354	export LANG="ja_JP.UTF8";
	355	id="TOKYO";
	356	print_dateline "$@";
	357	); line_sep;
	358
	359	# Seoul, South Korea (pop. (2018): 25,514,000)
	360	(
	361	export TZ=Asia/Seoul;
	362	export LANG="ko_KR.UTF8";
	363	id="SEOUL";
	364	print_dateline "$@";
	365	); line_sep;
	366
20857531 SBS	367	# Pyongyang, North Korea
	368	(
	369	export TZ=Asia/Pyongyang;
	370	export LANG="ko_KP.UTF8";
	371	id="PYONGYANG";
	372	print_dateline "$@";
	373	); line_sep;
	374
4143a6ea SBS	375	# Sydney, Australia
	376	(
	377	export TZ=Australia/Sydney;
	378	export LANG="en_AU.UTF8";
	379	id="SYDNEY";
	380	print_dateline "$@";
	381	); line_sep;
	382
	383	# Guam
	384	(
	385	export TZ=Pacific/Guam;
	386	export LANG="en_GU.UTF8";
	387	id="GUAM";
	388	print_dateline "$@";
	389	); line_sep;
	390
	391	# Auckland, New Zealand
	392	(
	393	export TZ=Pacific/Auckland;
	394	export LANG="en_NZ.UTF8";
	395	id="AUCKLAND";
	396	print_dateline "$@";
	397	); line_sep;
	398
	399	return 0;
	400	}; # main program
	401
	402	main "$@";
b29fc43b SBS	403
	404	# Author: Steven Baltakatei Sandoval
	405	# License: GPLv3+