Property talk:P7295

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Gregorian calendar start date
date the Gregorian calendar was first used

Represents	adoption of the Gregorian calendar (Q18350297)
Data type	Point in time
Domain	country (Q6256) or administrative region (Q3455524)
Allowed values	15 October 1582 ≤ 𝓧 ≤ 1 March 1923
Example	Denmark (Q35) → 1 March 1700 Sweden (Q34) → 1 March 1753 Papal States (Q170174) → 15 October 1582
Lists	Items with the most statements of this property Count of items by number of statements (chart) Items with the most statements Items with the fewest statements Count of items by number of sitelinks (chart) Items with the most sitelinks Items with the most sitelinks, but no link to one Wikipedia (sample: Welsh Wikipedia, cywiki) Items with the fewest sitelinks Most linked wikis Items with the most identifier properties Items with no other statements Most recently created items Items with novalue claims Items with unknown value claims Items with deprecated claims Usage history (total) Usage history (main statement) Future dates Dates in Gregorian calendar before 1582 Dates before year 1 (Help:Dates#Years BC) Date on January 1 (Help:Dates#January 1 as date) Database reports/Constraint violations/P7295 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 82 Main statement 77 93.9% of uses Qualifier 3 3.7% of uses Reference 2 2.4% of uses

[create Create a translatable help page (preferably in English) for this property to be included here]

Type “country (Q6256), administrative region (Q3455524)”: item must contain property “instance of (P31)” with classes “country (Q6256), administrative region (Q3455524)” or their subclasses (defined using subclass of (P279)). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P7295#Type Q6256, Q3455524, SPARQL

Range from “+1582-10-15T00:00:00Z” to “+1923-03-01T00:00:00Z”: values should be in the range from “+1582-10-15T00:00:00Z” to “+1923-03-01T00:00:00Z”. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P7295#Range

Qualifiers “applies to part (P518), replaces (P1365), has cause (P828), statement is subject of (P805), excluding (P1011), reason for deprecated rank (P2241), reason for preferred rank (P7452)”: this property should be used only with the listed qualifiers. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P7295#allowed qualifiers, SPARQL