diff --git a/demo/src/app/components/+datepicker/demo-datepicker.module.ts b/demo/src/app/components/+datepicker/demo-datepicker.module.ts
index 0ecfcf9357..28554b3c98 100644
--- a/demo/src/app/components/+datepicker/demo-datepicker.module.ts
+++ b/demo/src/app/components/+datepicker/demo-datepicker.module.ts
@@ -12,44 +12,11 @@ import { routes } from './demo-datepicker.routes';
 
 import { defineLocale } from 'ngx-bootstrap/bs-moment';
 import {
-  ar,
-  de,
-  enGb,
-  es,
-  esDo,
-  esUs,
-  fr,
-  hi,
-  it,
-  ja,
-  ko,
-  nl,
-  nlBe,
-  pl,
-  ptBr,
-  ru,
-  zhCn
+
+  ar, cs, de, enGb, es, esDo, esUs, fr, hi, it, ja, ko, nl, nlBe, pl, ptBr, ru, zhCn
 } from 'ngx-bootstrap/locale';
 
-const locales = [
-  ar,
-  de,
-  enGb,
-  es,
-  esDo,
-  esUs,
-  fr,
-  hi,
-  it,
-  ja,
-  ko,
-  nl,
-  nlBe,
-  pl,
-  ptBr,
-  ru,
-  zhCn
-];
+const locales = [ar, cs, de, enGb, es, esDo, esUs, fr, hi, it, ja, ko, nl, nlBe, pl, ptBr, ru, zhCn];
 
 locales.forEach(locale => defineLocale(locale.abbr, locale));
 
diff --git a/src/bs-moment/i18n/cs.ts b/src/bs-moment/i18n/cs.ts
new file mode 100644
index 0000000000..23cfce7074
--- /dev/null
+++ b/src/bs-moment/i18n/cs.ts
@@ -0,0 +1,100 @@
+// moment.js locale configuration
+// locale : Czech [cs]
+// author : petrbela : https://github.com/petrbela
+// ported by: Frantisek Jandos : https://github.com/frantisekjandos
+
+import { LocaleData } from '../locale/locale.class';
+
+function plural(n: number): boolean {
+  return (n % 10 < 5) && (n % 10 > 1) && ((~~(n / 10) % 10) !== 1);
+}
+
+function translate(num: number, withoutSuffix: boolean, key: string, isFuture: boolean): string {
+  let result = num + ' ';
+  switch (key) {
+    case 's':  // a few seconds / in a few seconds / a few seconds ago
+      return (withoutSuffix || isFuture) ? 'pár sekund' : 'pár sekundami';
+    case 'm':  // a minute / in a minute / a minute ago
+      return withoutSuffix ? 'minuta' : (isFuture ? 'minutu' : 'minutou');
+    case 'mm': // 9 minutes / in 9 minutes / 9 minutes ago
+      if (withoutSuffix || isFuture) {
+        return result + (plural(num) ? 'minuty' : 'minut');
+      }
+      return result + 'minutami';
+    case 'h':  // an hour / in an hour / an hour ago
+      return withoutSuffix ? 'hodina' : (isFuture ? 'hodinu' : 'hodinou');
+    case 'hh': // 9 hours / in 9 hours / 9 hours ago
+      if (withoutSuffix || isFuture) {
+        return result + (plural(num) ? 'hodiny' : 'hodin');
+      }
+      return result + 'hodinami';
+    case 'd':  // a day / in a day / a day ago
+      return (withoutSuffix || isFuture) ? 'den' : 'dnem';
+    case 'dd': // 9 days / in 9 days / 9 days ago
+      if (withoutSuffix || isFuture) {
+        return result + (plural(num) ? 'dny' : 'dní');
+      }
+      return result + 'dny';
+    case 'M':  // a month / in a month / a month ago
+      return (withoutSuffix || isFuture) ? 'měsíc' : 'měsícem';
+    case 'MM': // 9 months / in 9 months / 9 months ago
+      if (withoutSuffix || isFuture) {
+        return result + (plural(num) ? 'měsíce' : 'měsíců');
+      }
+      return result + 'měsíci';
+    case 'y':  // a year / in a year / a year ago
+      return (withoutSuffix || isFuture) ? 'rok' : 'rokem';
+    case 'yy': // 9 years / in 9 years / 9 years ago
+      if (withoutSuffix || isFuture) {
+        return result + (plural(num) ? 'roky' : 'let');
+      }
+      return result + 'lety';
+  }
+}
+
+export const cs: LocaleData = {
+  abbr: 'cs',
+  months: 'leden_únor_březen_duben_květen_červen_červenec_srpen_září_říjen_listopad_prosinec'.split('_'),
+  monthsShort: 'led_úno_bře_dub_kvě_čvn_čvc_srp_zář_říj_lis_pro'.split('_'),
+  weekdays: 'neděle_pondělí_úterý_středa_čtvrtek_pátek_sobota'.split('_'),
+  weekdaysShort: 'ne_po_út_st_čt_pá_so'.split('_'),
+  weekdaysMin: 'ne_po_út_st_čt_pá_so'.split('_'),
+  longDateFormat: {
+    LT: 'HH:mm',
+    LTS: 'HH:mm:ss',
+    L: 'DD.MM.YYYY',
+    LL: 'D. MMMM YYYY',
+    LLL: 'D. MMMM YYYY HH:mm',
+    LLLL: 'dddd, D. MMMM YYYY HH:mm',
+    l : 'D. M. YYYY'
+  },
+  calendar: {
+    sameDay: '[dnes v] LT',
+    nextDay: '[zítra v] LT',
+    nextWeek: '[příští] dddd [v] LT',
+    lastDay: '[včera v] LT',
+    lastWeek: '[minulý] dddd [v] LT',
+    sameElse: 'L'
+  },
+  relativeTime: {
+    future: 'za %s',
+    past: 'před %s',
+    s: translate,
+    m: translate,
+    mm: translate,
+    h: translate,
+    hh: translate,
+    d: translate,
+    dd: translate,
+    M: translate,
+    MM: translate,
+    y: translate,
+    yy: translate
+  },
+  dayOfMonthOrdinalParse : /\d{1,2}\./,
+  ordinal(num: number): string { return `${num}.`; },
+  week: {
+    dow: 1, // Monday is the first day of the week.
+    doy: 4  // The week that contains Jan 4th is the first week of the year.
+  }
+};
diff --git a/src/locale.ts b/src/locale.ts
index 319f0e3e5c..2018034453 100644
--- a/src/locale.ts
+++ b/src/locale.ts
@@ -1,4 +1,5 @@
 export { ar } from './bs-moment/i18n/ar';
+export { cs } from './bs-moment/i18n/cs';
 export { de } from './bs-moment/i18n/de';
 export { enGb } from './bs-moment/i18n/en-gb';
 export { es } from './bs-moment/i18n/es';