ExoClock: up-to-date ephemerides for the ARIEL mission

Atmospheres of about 1000 exoplanets are going to be spectroscopically observed with ESA's future ARIEL mission. For the mission to be as efficient as possible, good preliminary knowledge of planet ephemerides is required before its launch, scheduled for 2029. To achieve this goal, the ExoClock project dedicated to continuous monitoring and updating the ephemerides of ARIEL candidates has been created. The project has been developed in a manner to make the best use of all available resources: observations reported in the literature, observations from space instruments, and, mainly, observations from ground-based telescopes, including both professional and amateur observatories. In this report we present our observations of exoplanet transits performed within the ExoClock project in 2022–2024.