The transit of the exoplanet HAT-P-18b was observed at Taurus Hill Observatory 10./11.4.2011. The object is located about 540 light years from Earth and the mother star is K-type of star. The period of the planet is 5.5 days and it is so called “Hot Jupiter”. According the measurements the duration of the transit was 158.2 minutes and the dimmening of the mother star 23.6 mmag. This observation has been published in TRESCA database: http://var2.astro.cz/EN/tresca/transit-detail.php?id=1302486819 (CREDIT: TRESCA).