[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: 0.3.1
# 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`.

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"
be603b6f	5	# Version: 0.3.1
4143a6ea SBS	6	# Ref/Attrib: [1] "ISO 8601". Wikipedia. https://en.wikipedia.org/wiki/ISO_8601
	7	# [2] "Changing the Locale in Wine" https://stackoverflow.com/a/16428951
	8	# [3] "Shanghai vs Beijing" https://bugs.launchpad.net/ubuntu/+source/libgweather/+bug/228554
	9	# Notes: * Check `ls -R /usr/share/zoneinfo` for time zone names.
	10	# * Check `cat /usr/share/i18n/SUPPORTED` for supported locales.
	11	# * For list of valid locales, see: https://manpages.ubuntu.com/manpages/bionic/man3/DateTime::Locale::Catalog.3pm.html
	12	# * Locations chosen for population, personal signifiance, and spatial coverage.
514ae735	13	# * For International Atomic Time (TAI), use offsets from UTC provided in `/usr/share/zoneinfo/leap-seconds.list`.
4143a6ea	14
b29fc43b SBS	15	yell() { echo "$0: $*" >&2; }
	16	die() { yell "$*"; exit 111; }
	17	must() { "$@" \|\| die "cannot $*"; }
	18	insertStr() {
	19	# Desc: Inserts a string into another string at a specified position.
	20	# Input: arg1: str str_rec String to receive insertion
	21	# arg2: int pos Insertion position (0 = append to front)
	22	# arg3: str str_ins String to be inserted
	23	# Output: stdout: Combined string
	24	# Version: 0.0.2
	25	# Depends: BK-2020-03: yell(), die(), must()
	26	# Ref/Attrib: * BK-2020-03: https://gitlab.com/baltakatei/baltakatei-exdev/
	27	# * Cooper, Mendel. “Advanced Bash-Scripting Guide: Manipulating Strings”. tldp.org https://tldp.org/LDP/abs/html/string-manipulation.html
	28
	29	local str_rec pos str_ins re len_str_rec;
	30	local pfx_pos_start pfx_len pfx;
	31	local sfx_pos_start sfx_len sfx;
	32
	33	# Check args
	34	if [[ $# -ne 3 ]]; then
	35	yell "ERROR:Invalid argument count:$#";
	36	return 1; fi;
	37	re='^[0-9]+$';
	38	if [[ ! "$2" =~ $re ]]; then
	39	yell "ERROR:Not an int:$2";
	40	return 1; fi;
	41	str_rec="$1";
	42	pos="$2";
	43	str_ins="$3";
	44
	45	# Calculate string stats
	46	len_str_rec="${#str_rec}";
	47
	48	# Form prefix
	49	pfx_pos_start="0";
	50	pfx_len="$pos";
	51	pfx="${str_rec:$pfx_pos_start:$pfx_len}";
	52
	53	# Form suffix
	54	sfx_pos_start="$(( pos ))";
	55	sfx_len="$(( len_str_rec - pos ))";
	56	sfx="${str_rec:$sfx_pos_start:$sfx_len}";
	57
	58	# Print output to stdout
	59	printf "%s%s%s\n" "$pfx" "$str_ins" "$sfx";
	60	}; # Insert string provided at indicated position via stdout
4143a6ea SBS	61	line_sep() {
	62	# Input: var: n_ln
	63	local skip_every=4;
	64	((n_ln++));
	65	if ! ((n_ln % "$skip_every")); then
	66	printf "\n";
	67	fi;
	68	return 0;
	69	}; # periodically print separating blank line
b29fc43b SBS	70	get_tz_offset() {
	71	# Desc: Get from 'date' the timezone UTC offset in a way
	72	# compatible with both GNU Coreutils and BSD versions.
	73	# Input: env var: TZ (time zone for date; e.g. 'America/Denver')
	74	# Depends: date (GNU Coreutils 8.32 or BSD), rev
	75	local ntz ntz ntz_out;
	76	local last2;
	77
	78	# Get numeric time zone string in way compatible with GNU Coreutils and BSD
	79	ntz="$(date "+%z")"; # e.g. "+0530"
	80
	81	# Check if last two characters are trailing zeros that can be removed.
	82	last2="${ntz:3:2}"; # assumes $ntz is 5 characters (i.e. "±HHMM")
	83	#last2="$(rev <<< $ntz)" && last2="${last2:0:2}" && last2="$(rev <<< "$last2")";
	84	if [[ "$last2" == "00" ]]; then
	85	## ntz_out is truncated by 2 characters
be603b6f SBS	86	len_ntz="${#ntz}";
	87	len_ntz_out="$(( len_ntz - 2 ))";
	88	ntz_out=""${ntz:0:$len_ntz_out};
b29fc43b SBS	89	else
	90	## ntz_out is ntz with semicolon inserted after HH
	91	ntz_out="$(insertStr "$ntz" 3 ":" )";
	92	fi;
	93
	94	# Output via stdout
	95	printf "%s" "$ntz_out";
	96	}; # Format numeric time zone (for BSD date compatibility)
4143a6ea SBS	97	print_dateline() {
	98	# Input: var: $id
	99	# var: $fs_1
	100	# var: $fs_2
	101	# var: $fs_3
	102	# args: $@
b29fc43b	103	# env var: TZ (time zone for date; e.g. 'America/Denver')
4143a6ea SBS	104	# Output: stdout
4143a6ea SBS	105	# Depends: printf, date
b29fc43b	106	# get_tz_offset()
4143a6ea	107	# Ref/Attrib: * Truncate string in printf https://stackoverflow.com/a/46812677
b29fc43b	108	local s_1 s_2 s_2_tz s_3 s_4;
4143a6ea SBS	109
4143a6ea SBS	110	s_1="$id";
b29fc43b SBS	111	s_2="$(date "$@" "$fs_1")"; # ISO-8601 without numeric timezone
	112	s_3="$(date "$@" "$fs_2")"; # Alternate ISO-8601 expressions
	113	s_4="$(date "$@" "$fs_3")"; # locale-specific date strings
	114
	115	# Append numeric timezone to $s_2 with appropriate format
	116	# (e.g. '-07' for 'Arizona', '+05:45' for 'Asia/Kathmandu')
	117	s_2_tz="$(get_tz_offset)";
	118	s_2="$( printf "%s%s" "$s_2" "$s_2_tz" )";
4143a6ea SBS	119
	120	printf "%-10.10s %-25.25s (%-20.20s) (%s)" "$s_1" "$s_2" "$s_3" "$s_4";
	121	printf "\n";
	122
	123	unset fs_1 fs_2 fs_3 fs_4;
	124	}; # print line of dates
	125	main() {
	126	n_ln=0; # for line_sep()
06ff9ce1	127	unset LC_TIME; # Fall back to time zone-specific locale settings.
4143a6ea SBS	128
4143a6ea SBS	129	# format strings
b29fc43b	130	fs_iso8601="+%Y-%m-%dT%H:%M:%S"; # typical ISO-8601 without timezone
4143a6ea SBS	131	fs_iso8601_etc="+%G-W%V-%u, %Y-%j"; # alternate ISO-8601 dates
	132	fs_locale="+%Z; %A; %c"; # locale-specific date strings
	133
	134	# vars for print_dateline()
	135	fs_1="$fs_iso8601";
	136	fs_2="$fs_iso8601_etc";
	137	fs_3="$fs_locale";
	138
	139	# UTC (pop. (2021): 7,837,000,000)
	140	(
	141	export TZ=UTC;
	142	id="UTC";
e202e295	143	fs_3="+%s seconds since 1970-01-01T00:00+00";
4143a6ea SBS	144	print_dateline "$@";
	145	); line_sep;
	146
	147	# Hawaii
	148	(
	149	export TZ=US/Hawaii;
	150	export LANG="haw-US.UTF8";
	151	id="HAWAII";
	152	print_dateline "$@";
	153	); line_sep;
	154
	155	# Los Angeles, USA
	156	(
	157	export TZ=America/Los_Angeles;
	158	export LANG="en_US.UTF-8";
	159	id="LOS ANGELES";
	160	print_dateline "$@";
	161	); line_sep;
	162
	163	# Denver, USA (pop. (2021): 711,463)
	164	(
	165	export TZ=America/Denver;
	166	export LANG="en_US.UTF-8";
	167	id="DENVER";
	168	print_dateline "$@";
	169	); line_sep;
	170
	171	# Chicago, USA (pop. (2021): 711,463)
	172	(
	173	export TZ=America/Chicago;
	174	export LANG="en_US.UTF-8";
	175	id="CHICAGO";
	176	print_dateline "$@";
	177	); line_sep;
	178
	179	# Mexico City, Mexico (pop. (2018): 21,804,515)
	180	(
	181	export TZ=America/Mexico_City;
	182	export LANG="es_MX.UTF8";
	183	id="MEXICO CITY";
	184	print_dateline "$@";
	185	); line_sep;
	186
	187	# Panama City, Panama
	188	(
	189	export TZ=America/Panama;
	190	export LANG="es_PA.UTF8";
	191	id="PANAMA CITY";
	192	print_dateline "$@";
	193	); line_sep;
	194
	195	# New York, USA (pop. (2018): 20,140,470)
	196	(
	197	export TZ=America/New_York;
	198	export LANG="en_US.UTF-8";
	199	id="NEW YORK";
	200	print_dateline "$@";
	201	); line_sep;
	202
	203	# São Paulo, Brazil
	204	(
	205	export TZ=America/Sao_Paulo;
	206	export LANG="pt_BR.UTF8";
	207	id="SAO PAULO";
208	print_dateline "$@";
209	); line_sep;
210
211	# Buenos Aires
212	(
213	export TZ=America/Argentina/Buenos_Aires;
214	export LANG="es_AR.UTF8";
215	id="BUENOS AIRES";
216	print_dateline "$@";
217	); line_sep;
218
219	# London, England
220	(
221	export TZ=Europe/London;
222	export LANG="en_GB.UTF-8";
223	id="LONDON";
224	print_dateline "$@";
225	); line_sep;
226
227	# Kinshasa, Africa
228	(
229	export TZ=Africa/Kinshasa;
230	export LANG="ln_CD.UTF8";
231	id="KINSHASA";
232	print_dateline "$@";
233	); line_sep;
234
235	# Lagos, Africa
236	(
237	export TZ=Africa/Lagos;
238	export LANG="en_NG.UTF8";
239	id="LAGOS";
240	print_dateline "$@";
241	); line_sep;
242
243	# Paris, France
244	(
245	export TZ=Europe/Paris;
246	export LANG="fr_FR.UTF8";
247	id="PARIS";
248	print_dateline "$@";
249	); line_sep;
250
251	# Stockholm, Sweden
252	(
253	export TZ=Europe/Stockholm;
254	export LANG="sv_SE.UTF8";
255	id="STOCKHOLM";
256	print_dateline "$@";
257	); line_sep;
258
259	# Cairo, Egypt
260	(
261	export TZ=Africa/Cairo;
262	export LANG="ar_EG.UTF8";
263	id="CAIRO";
264	print_dateline "$@";
265	); line_sep;
266
267	# Athens (pop. (2020): 3,526,887)
268	(
269	export TZ=Europe/Athens;
270	export LANG="el_GR.UTF8";
271	id="ATHENS";
272	print_dateline "$@";
273	); line_sep;
274
275	# Istanbul (pop. (2020): 13,719,061)
276	(
277	export TZ=Asia/Istanbul;
278	export LANG="tr_TR.UTF8";
279	id="ISTANBUL";
280	print_dateline "$@";
281	); line_sep;
282
283	# Tehran, Iran
284	(
285	export TZ=Asia/Tehran;
286	export LANG="fa_IR.UTF8";
287	id="TEHRAN";
288	print_dateline "$@";
289	); line_sep;
290
291	# Moscow, Russia
292	(
293	export TZ=Europe/Moscow;
294	export LANG="ru_RU.UTF-8";
295	id="MOSCOW";
296	print_dateline "$@";
297	); line_sep;
298
299	# Kyiv, Ukraine (pop. (2021): 2,962,180)
300	(
301	export TZ=Europe/Kyiv;
302	export LANG="uk_UA.UTF-8";
303	id="KYIV";
304	print_dateline "$@";
305	); line_sep;
306
307	# Delhi, India (pop. (2018): 29,000,000)
308	(
309	export TZ=Asia/Kolkata;
310	export LANG="hi_IN.UTF-8";
311	id="DELHI";
312	print_dateline "$@";
313	); line_sep;
314
315	# Jakarta, Indonesia (pop. (2018): 33,430,285)
316	(
317	export TZ=Asia/Jakarta;
318	export LANG="id_ID.UTF8";
319	id="JAKARTA";
320	print_dateline "$@";
321	); line_sep;
322
323	# Singapore, Singapore (pop (2018): 5,792,000)
324	(
325	export TZ=Asia/Singapore;
326	export LANG="en_SG.UTF-8";
327	id="SINGAPORE";
328	print_dateline "$@";
329	); line_sep;
330
331	# Beijing, China (pop. (2018): 19,618,000)
332	(
333	export TZ=Asia/Shanghai; # [3]
334	export LANG="zh_CN.UTF-8";
335	id="BEIJING";
336	print_dateline "$@";
337	); line_sep;
338
20857531 SBS	339	# Taipei, Taiwan (pop (2019): 7,034,084)
	340	(
	341	export TZ=Asia/Taipei; # [3]
	342	export LANG="zh_TW.UTF-8";
	343	id="TAIPEI";
	344	print_dateline "$@";
	345	); line_sep;
	346
4143a6ea SBS	347	# Tokyo, Japan (pop. (2018): 37,274,000)
	348	(
	349	export TZ=Asia/Tokyo;
	350	export LANG="ja_JP.UTF8";
	351	id="TOKYO";
	352	print_dateline "$@";
	353	); line_sep;
	354
	355	# Seoul, South Korea (pop. (2018): 25,514,000)
	356	(
	357	export TZ=Asia/Seoul;
	358	export LANG="ko_KR.UTF8";
	359	id="SEOUL";
	360	print_dateline "$@";
	361	); line_sep;
	362
20857531 SBS	363	# Pyongyang, North Korea
	364	(
	365	export TZ=Asia/Pyongyang;
	366	export LANG="ko_KP.UTF8";
	367	id="PYONGYANG";
	368	print_dateline "$@";
	369	); line_sep;
	370
4143a6ea SBS	371	# Sydney, Australia
	372	(
	373	export TZ=Australia/Sydney;
	374	export LANG="en_AU.UTF8";
	375	id="SYDNEY";
	376	print_dateline "$@";
	377	); line_sep;
	378
	379	# Guam
	380	(
	381	export TZ=Pacific/Guam;
	382	export LANG="en_GU.UTF8";
	383	id="GUAM";
	384	print_dateline "$@";
	385	); line_sep;
	386
	387	# Auckland, New Zealand
	388	(
	389	export TZ=Pacific/Auckland;
	390	export LANG="en_NZ.UTF8";
	391	id="AUCKLAND";
	392	print_dateline "$@";
	393	); line_sep;
	394
	395	return 0;
	396	}; # main program
	397
	398	main "$@";
b29fc43b SBS	399
	400	# Author: Steven Baltakatei Sandoval
	401	# License: GPLv3+