Keyword Analysis & Research: when did gregorian calendar begin

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
when did gregorian calendar begin	1.95	0.1	8903	70	33
when	1.91	0.3	4601	45	4
did	0.48	0.3	6315	81	3
gregorian	0.75	0.9	21	95	9
calendar	0.14	0.8	6231	18	8
begin	1.81	0.7	4033	84	5

Keyword	CPC	PCC	Volume	Score
when did gregorian calendar begin	1.52	0.7	5703	94
what year did the gregorian calendar begin	1.3	0.9	2097	2
how did the gregorian calendar begin	0.78	0.3	8903	53
gregorian calendar beginning	0.74	0.4	7295	76
when does the gregorian calendar begin	1.03	0.2	4403	22