Saint-Denis vs. Vientiane time difference

9:59 pm Sunday12:59 am Monday

Saint-Denis, Reunion (French) is 3 hours behind Vientiane, Laos

9:59 pm Sunday, in Saint-Denis, Reunion (French) is
12:59 am Monday, in Vientiane, Laos
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Time difference between Saint-Denis Reunion (French) and Vientiane Laos is 3:0 hours

Neither Saint-Denis nor Vientiane observe daylight saving time so the time difference between Saint-Denis and Vientiane remains 3 hours throughout the year.