The first tremor was felt at 2.37 pm with epicentre in Gorkha district, 150 kilometres west of Kathmandu, according to the National Seismological Centre.
Another quake with epicentre in Dhading district, 90 km west of the capital, was felt in the morning.
A total of 454 aftershocks of 4 or more magnitude have been recorded since the devastating earthquakes in April last year that killed nearly 9,000 people.