@abar: “each Friday” has a very subtle difference with “every Friday”. Kurang lebihnya: “each” = masing2, “every” = setiap. Both have been used interchangeably to mean the same thing. Personally, I think “each” is more appropriately used when referring to individual items from a finite group (e.g. “each Friday in June”) whereas “every” is used to refer to individual items from a larger or infinite group (e.g. “every Friday”, awal akhirnya gak gitu jelas).