ts:referenceFrame

• http://hosi.org/When/TM/CalendarEra/Vietnamese
• http://hosi.org/When/TM/CalendarEra/Vietnamese::阮朝::嘉隆
• http://hosi.org/When/TM/CalendarEra/Vietnamese::阮朝
• http://hosi.org/When/TM/CalendarEra/Vietnamese::阮朝::明命
• http://hosi.org/When/TM/CalendarEra/Vietnamese::阮朝::紹治
• http://hosi.org/When/TM/CalendarEra/Vietnamese::阮朝::嗣徳
• http://hosi.org/When/TM/CalendarEra/Vietnamese::阮朝::協和
• http://hosi.org/When/TM/CalendarEra/Vietnamese::阮朝::育徳
• http://hosi.org/When/TM/CalendarEra/Vietnamese::阮朝::建福
• http://hosi.org/When/TM/CalendarEra/Vietnamese::阮朝::咸宜
• http://hosi.org/When/TM/CalendarEra/Vietnamese::阮朝::同慶
• http://hosi.org/When/TM/CalendarEra/Vietnamese::阮朝::成泰
• http://hosi.org/When/TM/CalendarEra/Vietnamese::阮朝::維新
• http://hosi.org/When/TM/CalendarEra/Vietnamese::阮朝::啓定
• http://hosi.org/When/TM/CalendarEra/Vietnamese::阮朝::保大