bug fixes

lib/time.js

@@ -152,19 +152,27 @@ function CronTime(luxon) {
 			}
 
 			if (typeof this.utcOffset !== 'undefined') {
-				let offset =
-					this.utcOffset >= 60 || this.utcOffset <= -60
-						? this.utcOffset / 60
-						: this.utcOffset;
+				if (typeof this.utcOffset === 'string') {
+					const parts = this.utcOffset.split(':');
+					const hours = parseInt(parts[0]);
+					const minutes = parseInt(parts[1]);
+					if (this.utcOffset[0] === '-') this.utcOffset = hours * 60 - minutes;
+					else this.utcOffset = hours * 60 + minutes;
+				}
+				let offset = this.utcOffset / 60;
+
 				offset = parseInt(offset);
 
 				const remainderMins = Math.abs(this.utcOffset - offset * 60);
+				const remainderMinsString =
+					remainderMins >= 10 ? remainderMins : '0' + remainderMins;
 
 				let utcZone = 'UTC';
-				if (offset < 0 || remainderMins > 0) {
-					utcZone += `${offset}:${remainderMins}`;
-				} else if (offset > 0 || remainderMins > 0) {
-					utcZone += `+${offset}:${remainderMins}`;
+
+				if (this.utcOffset < 0) {
+					utcZone += `${offset === 0 ? '-0' : offset}:${remainderMinsString}`;
+				} else {
+					utcZone += `+${offset}:${remainderMinsString}`;
 				}
 
 				date = date.setZone(utcZone);