26 May and 10 Jun 2021
19 Nov and 4 Dec 2021
1 May and 16 May 2022
What's so special about these dates?

Answer:
26 May*, 19 Nov 2021* and 16 May 2022: lunar eclipses
10 Jun, 4 Dec 2021 and 1 May 2022: solar eclipses

They are the dates of SolarEclipses and LunarEclipses! Why eclipses usually come in pairs? Stay tuned!

Remark: Dates are in Hong Kong time. In Hong Kong, only the lunar eclipses with * are/were visible while all solar eclipses cannot be seen.