116   formatDate(value) {  argument
119     if (value instanceof Date) {
121         return value.toISOString().substring(0, 10);
125       return format(value, pattern, { timezone });
128   formatTime(value) {  argument
131     if (value instanceof Date) {
137         return `${value.toLocaleTimeString('default', timeOptions)} UTC`;
140       const shortTz = this.shortTimeZone(value);
142       return format(value, pattern, { timezone }).replace('GMT', 'UTC');
145   shortTimeZone(value) {  argument
146     const longTZ = value