In apartheid South Africa 16 December was known as Day of the Vow, as the Voortrekkers in preparation for the battle on 16 December against the Zulus took a Vow before God that they would build a church and that they and their descendants would observe the day as a day of thanksgiving should they be granted victory.
Natilishumi nesitfupha enyangeni ye Ngongoni baatsatsa sifungo phambi kwa Nkulunkulu, kutsi umabangehlulekisa emaZulu, batowakha lisontfo, nekutsi ke bantfwababo netitukulwane titobona lelililanga njengelilanga lekubonga.