There are a number of Bahá’í Holy days, two of them being the Birth of the Báb and the Birth of Bahá’u’lláh. At the Bahá’í World Center we celebrate these using the lunar calendar, where they always follow each other – hence the "twin" Holy days. This year they were on 31 January and 1 February.
Hanging around for refreshments before the programme:
Inside:
Getting seated:
Outside, with Arman and Matthew:
And Barbara: