short timezone list

timezone.html

<select name="timezone" id="timezone" class="form-control select2">
                            <option value="">Select Timezone</option>
                            <option value="-12:00">Baker Island Time UTC-12:00</option>
                            <option value="-11:00">Samoa Standard Time UTC-11:00</option>
                            <option value="-10:00">Cook Island Time UTC-10:00</option>
                            <option value="-09:30">Marquesas Islands Time UTC-09:30</option>
                            <option value="-09:00">Alaska Standard Time UTC-09:00</option>
                            <option value="-08:00">Pacific Standard Time UTC-08:00</option>
                            <option value="-07:00">Mountain Standard Time UTC-07:00</option>
                            <option value="-06:00">Central Standard Time UTC-06:00</option>
                            <option value="-05:00">Eastern Standard Time UTC-05:00</option>
                            <option value="-04:00">Puerto Rico and US Virgin Islands Time UTC-04:00</option>
                            <option value="-03:30">Canada Newfoundland Time UTC-03:30</option>
                            <option value="-03:00">Argentina Standard Time UTC-03:00</option>
                            <option value="-02:00">South Sandwich Islands Time UTC-02:00</option>
                            <option value="-01:00">Central African Time UTC-01:00</option>
                            <option value="00:00">Coordinated Universal Time UTC±00:00</option>
                            <option value="+01:00">European Central Time UTC+01:00</option>
                            <option value="+02:00">Eastern European Time UTC+02:00</option>
                            <option value="+03:00">Eastern African Time UTC+03:00</option>
                            <option value="+03:30">Middle East Time UTC+03:30</option>
                            <option value="+04:00">Near East Time UTC+04:00</option>
                            <option value="+04:30">Afghanistan Time UTC+04:30</option>
                            <option value="+05:00">Pakistan Lahore Time UTC+05:00</option>
                            <option value="+05:30">India Standard Time UTC+05:30</option>
                            <option value="+05:45">Nepal Time UTC+05:45</option>
                            <option value="+06:00">Bangladesh Standard Time UTC+06:00</option>
                            <option value="+06:30">Myanmar Standard Time UTC+06:30</option>
                            <option value="+07:00">Vietnam Standard Time UTC+07:00</option>
                            <option value="+08:00">China Taiwan Time UTC+08:00</option>
                            <option value="+08:45">Central Western Standard Time UTC+08:45</option>
                            <option value="+09:00">Japan Standard Time UTC+09:00</option>
                            <option value="+09:30">Australia Central Time UTC+09:30</option>
                            <option value="+10:00">Australia Eastern Time UTC+10:00</option>
                            <option value="+10:30">Lord Howe Standard Time UTC+10:30</option>
                            <option value="+11:00">Solomon Standard Time UTC+11:00</option>
                            <option value="+12:00">New Zealand Standard Time UTC+12:00</option>
                            <option value="+12:45">Chatham Standard Time UTC+12:45</option>
                            <option value="+13:00">Phoenix Island Time UTC+13:00</option>
                            <option value="+14:00">Line Islands Time UTC+14:00</option>
                        </select>