Such Foreign nationals , who are already holding Tourist Visas with stay stipulation of 180 days/90 days and with multiple entry facility, there should be gap of at least 2 months between two visits to the country on Tourist Visa. In case requirement to visit the country within two months, permission should be sought from the Head of Mission concerned indicating the specific reasons for another visit within a short period. In all such cases registration would be required within 14 days of arrival.
This includes foreigners holding Tourist Visa who after initial entry into India had gone out of the country largely on account of neighbourhood tourism related travel and are re-entering India within two months before their final exit from India. However, Immigration authorities in all Immigration Check Posts may allow such foreign nationals on Tourist Visa to make two or three entries into the country (need based) subject to production of an itinerary and supporting documentation (Ticket bookings).
ソース:Bureau of Immigration, India の Instructions For Foreigners ←ピンク色の文字部分
ロンリープラネット掲示板にインドを出国してネパールに43日間滞在後、スノウリからインドに再入国出来たという投稿(2010年1月29日の投稿だから2010年1月1日からは最大29日しか過ぎていない)が出ている。厳密なチェックはしていないのか、2010年1月1日以前の出国なので規定の適用外なのかは不明。 LP forum
